In the Germanic languages, a strong verb is one which marks its past tense by means of ablaut. In English, these are verbs like sing, sang, sung. The term "strong verb" is a translation of German "starkes Verb", which was coined by the linguist Jacob Grimm and contrasts with the so-called "weak verb" ("schwaches Verb") which forms its past tense by means of a dental suffix.
This article discusses the history of the forms of these verbs mainly in the West Germanic languages, i.e. English, German and Dutch, and the historical forms Old English, Old High German and Old Dutch. For other aspects of these verbs, see the overview article Germanic verb.
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As an example of the conjugation of a strong verb, we may take the Old English class 2 verb bēodan, "to command" (cf. English "bid").
This has the following forms:
Infinitive | Supine | Present Indicative | Present Subjunctive | Past Indicative | Past Subjunctive | Imperative mood | Past participle |
bēodan | tō bēodenne |
ic bēode |
ic bēode |
ic bēad |
ic bude |
- |
geboden |
While the inflections are more or less regular, the vowel changes in the stem are not predictable without an understanding of the Indo-European ablaut system, and students have to learn the principal parts by heart: bēodan, bīett, bēad, budon, boden. The five principal parts are:
Strictly speaking, in this verb ablaut causes only a threefold distinction: parts 1 and 2 are from the e-grade, part 3 from the o-grade, and parts 4 and 5 from the zero grade. The other two distinctions are caused by different kinds of regressive metaphony: part 2, when it is distinct at all, is always derived from part 1 by Umlaut. In some verbs, part 5 is a discrete ablaut grade, but in this class 2 verb it is derived from part 4 by an a-mutation.
Six different ablaut sequences (German: Ablautreihe) exist in the Germanic languages. These are referred to as the six classes in which the strong verbs can be subdivided.
In PIE there were already several possible ablaut sequences in the verb conjugation. The Germanic verb is based on the following four patterns. (For orientation, the numbers of the Germanic principal parts and verb classes are included in this table, but the vowels are those of the unattested but reconstructed Proto-Indo-European language (PIE)).
Present
(Parts 1&2) |
Perfect singular
(Part 3) |
Perfect plural
(Part 4) |
Verbal noun / past participle
(Part 5) |
Class Inspired into Germanic | |
Standard Pattern | e | o | zero | zero | Classes 1–3 |
Substitution of zero grade |
e | o | ē | zero | Class 4 |
e | o | ē | e | Class 5 | |
Predominant a-vowel | a | ō | ō | a | Class 6 |
The standard pattern of PIE is best represented in Germanic by class 3. Classes 1 & 2 have also developed out of this pattern, but here the ablaut vowel was followed by a semivowel (i/j and u/v respectively) which later combined with it to form a diphthong. The PIE variations from which Germanic classes 4 & 5 evolved contain consonant structures which were partly or wholly incompatible with the zero grade, and thus the e-grade and lengthened e-grade were substituted in one or both of the zero grade positions. Thus classes 1-5 are all easily explicable as having developed logically from a single basic pattern.
Class 6 is more problematic. It is a controversial question whether the earlier phases of PIE had an a-vowel at all. At any rate, most occurrences of an /a/ in late PIE are associated with an earlier laryngeal h2. Opinions still vary about how exactly this worked, but it is conceivable, for example, that the present stem could have experienced the shift h2e → a. If this is so, then class 6 may also be a variation on the standard pattern.
In addition to the six ablaut sequences, Germanic originally had reduplicating verbs, which in the West and North Germanic languages have lost their reduplication and simplified into a relatively coherent group which may be thought of as a seventh class. However, some verbs, most notably the ri-verbs, retained at least partial reduplication in some languages. In Gothic, reduplication remained in full.
The Anglo-Saxon scholar Henry Sweet gave names to the seven classes (the "drive conjugation", the "choose conjugation" etc), but normally they are simply referred to by numbers.
Before looking at the seven classes individually it is helpful to consider first the general developments which affected all of them. The following phonological changes are relevant for the discussion of the ablaut system:
From PIE to Germanic
From Germanic to Gothic
From Germanic to the north and west Germanic dialects
From Germanic to Old English
From Old English to Modern English
From Germanic to Old High German
From Old High German to Modern German
From Germanic to early Middle Dutch
From Middle Dutch to Modern Dutch
From early Modern Dutch to Afrikaans
Other changes in the general shape of the verbs:
Class 1, Sweet's "drive conjugation", represents all verbs in which the IE Ablaut-vowel was followed by an i. This combination is effectively a diphthong in PIE, or in the zero-grade, a simple i. Regular vowel shifts in Germanic change ei > ī and oi > ai. Metaphony does not affect class 1. Compare with Latin venio ("I come"): infinitive venire, perfect active indicative vēni, and future active participle venturus.
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | |
Ablaut grade | e | e | o | zero | zero |
Proto Indo-European | ei | ei | oi | i | i |
Proto Germanic | ī | ī | ai | i | i |
Old English | ī | ī | ā | i | i |
Middle Dutch | ī | ī | ē | ē | ē |
Old High German | ī | ī | ei/ē | i | i |
Gothic | ei | ei | ai | i | i |
Old Norse | í | í | ei | i | i |
In Old English, Germanic ai becomes ā.
Modern English has experienced a diphthongisation of ī (though it is still spelled with an i) and a shift ā > ō. The modern preterite is taken from the old preterite singular, and in the case of "shine", the past participle has also assimilated to the preterite singular.
Class 1 verbs in modern English (excluding derived verbs such as abide and override) are bide, bite, chide, drive, hide, ride, rise, shine, shrive, smite, stride, strike, strive, thrive, write. However, note that, although these verbs have uniformity in their infinitive vowel, they no longer form a coherent class in further inflected forms – for example, bite (bit, bitten), ride (rode, ridden), shine (shone, shone), and strike (struck, struck/stricken, with struck and stricken used in different meanings) all show different patterns from one another – but bide, drive, ride, rise, smite, stride, strive, write do form a (more or less) coherent subclass. Most of these verbs are descended from Old English class 1 verbs. However:
In addition, writhe is an English class 1 verb that has class 1 forms (wrothe, writhen) only in archaic usage.
For the principal parts of all English strong verbs see: Wiktionary appendix: Irregular English verbs.
In Old High German, Germanic ai becomes ei, and then by OHG monophthongisation it becomes ē before a velar consonant. Thus Old High German has two subclasses, depending on the vowel in the preterite singular:
Like English, Modern German diphthongises the ī (spelling it ei). The modern language takes its preterite from the old preterite plural, so the distinction between the two subclasses disappears. However a new subdivision arises because the i of the past tense forms is lengthened to ie before a single consonant. As it happens, reiten and leihen serve as examples of this too, but many OHG 1a verbs are in the modern long vowel group.
Class 1 verbs in modern German are:
In Dutch, class 1 has remained very regular, and follows the pattern:
Class 1 verbs in Dutch are bezwijken, bijten, blijken, blijven, drijven, glijden, grijpen, hijsen, kijken, knijpen, krijgen, lijden, lijken, mijden, prijzen, rijden, rijzen, schijnen, schijten, schrijden, schrijven, slijpen, slijten, smijten, spijten, splijten, stijgen, strijden, strijken, verdwijnen, vermijden, wijken, wijzen, wrijven, zwijgen.
In Gothic:
Class 2, Sweet's "choose conjugation", represents all verbs in which the IE Ablaut-vowel was followed by a u. In PIE it is therefore very similar to class 1. A regular vowel shift in Germanic changes ou > au. In two separate metaphonic processes, the present singular (part 2) is umlauted (eu > iu) because of an i in the inflection and the u in the past participle (part 5) is assimilated to the a in the inflection (u > o). A small number of verbs form a subgroup with ū in parts 1 and 2, for reasons which have not been entirely explained; this anomalous form may originate in Proto-Indo-European.
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | |
Ablaut grade | e | e | o | zero | zero |
Proto Indo-European | eu | eu | ou | u | u |
Proto Germanic | eu / ū | iu / ū | au | u | u |
Old English | ēo / ū | īe / ȳ | ēa | u | o |
Middle Dutch | ie / ȳ | ie / ȳ | ō | ō | ō |
Old High German | io / ū | iu / ū | ou / ō | u | o |
Old Norse | jú / ú | ý / ý | au | u | u |
Gothic | iu / ū | iu / ū | au | u | u |
In Old English, Germanic eu becomes ēo.
An Old English example with the present stem in ū:
In Modern English, this is a small group characterised by the o vowel of the participle being assimilated to the preterite:
Class 2 verbs in Modern English are choose, cleave, dive (AE), fly, freeze, which do not form a coherent class, as each verb has different irregularities from each other verb.
In Old High German, the usual pattern is:
An Old High German example with present stem in ū:
An example with wandel affecting the whole of the present stem.
A small group sometimes called class 2b has Old High German monophthongisation in the preterite singular:
Regular shifts on the way to Modern German change io > ie and ou > o. The modern preterite is based on the OHG preterite singular:
Class 2 verbs in Modern German are: biegen, bieten, fliegen, fliehen, fließen, frieren, genießen, gießen, klieben, kriechen, riechen, schieben, schießen, schließen, sprießen, stieben, verlieren, ziehen; with ū-present: saufen, saugen.
Two anomalous class 2 verbs in modern German are lügen ("to tell a lie") and trügen ("to deceive"). This no doubt arises from a desire to disambiguate Middle High German liegen from ligen (class 5), which would have sounded the same in Early Modern German. Trügen would have followed in its wake, because the two words form a common rhyming collocation.
In Dutch, class 2 follows the patterns
The present stem in ui represents the old ū-present, but interestingly this subgroup has grown, as a number of class 2 verbs which originally did not have ū-presents have taken the ui by analogy. Class 2 verbs in modern Dutch are: bedriegen, bieden, genieten, gieten, kiezen, liegen, schieten, verliezen, vliegen, vriezen; with ū-present: buigen, druipen, duiken, fluiten, kruipen, ruiken, schuilen, schuiven, sluiten, snuiven, spuiten, stuiven, zuigen, zuipen.
In Old Norse the past participle and plural present stem were subject to change due to assimilation.
In Gothic:
Class 3, Sweet's "bind conjugation", represents all verbs in which the IE Ablaut-vowel was followed by a nasal (n) or a liquid (r/l) and another consonant. Also possible is h plus another consonant. So the combinations are:
In the zero-grade forms, the nasal or liquid became a syllabic sonorant in PIE, transcribed as a circle below the letter. In Germanic, these syllabic nasals and liquids were not used, so a u vowel was added in compensation: l̥ > ul. Umlaut causes a shift e > i in the present singular, but in the case of the nasals, this shift takes place throughout the present stem: this is referred to as wandel - the same effect as umlaut, but triggered by the nasal consonant. The preterite singular shows the standard Germanic vowel shift o > a. In the participle, ul becomes ol through metaphony but only with the liquid, as the metaphony is blocked by the nasal.
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | |
Ablaut grade | e | e | o | zero | zero |
Proto Indo-European | en / el / er | en / el / er | on / ol / or | n̥ / l̥ / r̥ | n̥ / l̥ / r̥ |
Proto Germanic | in / el / er | in / il / ir | an / al / ar | un / ul / ur | un / ul / ur |
Old English | in / el / eor | in / il / ier | an / eal / ear | un / ul / ur | un / ol / or |
Middle Dutch | in / el / er | in / el / er | an / al / ar | on / ol / or | on / ol / or |
Old High German | in / el / er | in / il / ir | an / al / ar | un / ul / ur | un / ol / or |
Gothic | in / il / aír | in / il / aír | an / al / ar | un / ul / aúr | un / ul / aúr |
In Old English, class 3a is little changed from Germanic.
Class 3b experiences a diphthongisation called "Brechung" in preterite singular (a > ea); before r and h this also affects the present stem (e > eo).
West Saxon palatal diphthongization causes i > ie after g:
Three verbs have an anomalous æ in preterite singular: berstan ("to burst"), bregdan ("to pull"), frignan ("to ask").
In Modern English, this class is fairly large. This class is still relatively regular: the preterite is mostly formed from the OE preterite singular, occasionally from the preterite plural.
However, there are some anomalies. The class 3 verbs in modern English are:
English fling does not go back to Old English, and may be a loan-word from Norse. It seems to have adopted class 3 forms by analogy with cling etc. Similarly ring, string.
In Old High German, class 3 has its vowels unchanged from Germanic:
Modern German takes the preterite from the OHG preterite singular.
However, the o of the 3b participle has been passed by analogy to some 3a verbs, and also to the preterite of some verbs of both groups:
Class 3 verbs in modern German
In Dutch, class 3a and the bulk of 3b have taken the vowel of the participle for the preterite. However, a small group of 3b verbs have developed a preterite in ie, perhaps by analogy with class 7. This gives the patterns:
A small number of verbs of other classes have taken the forms of class 3b by analogy. Class 3 verbs in modern Dutch are:
In Old Norse, numerous sound changes have resulted in this class fragmenting into 15 or so subclasses.
In Gothic:
Class 4, Sweet's "Bear conjugation", represents all verbs in which the ablaut vowel was followed by a single nasal or liquid. The zero-grade in the participle becomes a u in Germanic, but, outside of Gothic, changes to o by a-mutation; as a single nasal is not enough to block this mutation, subgroups do not form in the Germanic class 4 as they do in class 3.
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | |
Ablaut grade | e | e | o | ē | zero |
Proto Indo-European | e | e | o | ē | Ø |
Proto Germanic | e | i | a | ē | u |
Old English | e | i | æ | ǣ | o |
Middle Dutch | e | e | a | ā | o |
Old High German | e | i | a | ā | o |
Gothic | i | i | a | e | u |
In Old English, the general pattern is:
With West Saxon palatal diphthongization (after c, g):
The verb come is anomalous in all the West Germanic languages because it originally began with qu-, and the subsequent loss of the w sound coloured the vowel of the present stem.
Also anomalous:
In Modern English, regular class 4 verbs have all kept the –n in the participle, though eliminating the medial e after r, this class exhibits near homogeneity of vowel pattern:
Class 4 verbs in English are bear, break, get, shear, speak, steal, swear, tear, tread, wake, weave; and without the -n and of irregular vowel progression: come. Get, speak, tread and weave were originally of class 5, wake and swear were originally class 6.
Although the verb to be is suppletive and highly irregular, its preterite follows the pattern of a class 4 strong verb, with grammatischer Wechsel, and in English and Dutch this verb has retained the singular/plural distinction of both ablaut grade and consonant in the modern languages. Old English: wæs/wǣron, English: was/were. For full paradigms and historical explanations see Indo-European copula.
In Old High German, the pattern is:
In Modern German the preterite is based on the preterite singular. As the only difference between the historical classes 3b and 4 was the preterite plural, these two classes are now identical.
Kommen still has the anomalous o in the present stem (although some dialects still pronounce this as kemmen.)
Class 4 verbs in modern German: brechen, gebären, nehmen, schrecken, sprechen, stechen, stehlen, treffen; anomalous: kommen.
The preterite of sein ("to be") is Old High German: was/wârum, but levelled in modern German: war/waren.
In Dutch, class 4 and 5 verbs still show the distinction in vowel between the preterite singular and plural: ik nam ("I took") has the plural wij namen (not *nammen), that is, the 'short' vowel [ɑ] of the singular is replaced by the 'long' [a] in the plural. (Note the relationship of consonant doubling to vowel length, which is explained at Dutch orthography). The pattern is therefore:
In the case of komen, the w is retained in the preterite.
Class 4 verbs in Dutch are: bevelen, breken, nemen, spreken, steken, stelen; and anomalous: komen.
The preterite of wezen/zijn ("to be") still shows both (quantitative) ablaut and grammatischer Wechsel between the singular and plural: was/waren.
In Gothic:
Class 5, Sweet's "give conjugation", represents all verbs in which the IE Ablaut-vowel was followed by a single consonant other than a nasal or a liquid. This class is originally similar to class 4 except in the participle. There is also a small subgroup called "j-presents" which show umlaut throughout the whole of the present stem.
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | |
Ablaut grade | e | e | o | ē | e |
Proto Indo-European | e | e | o | ē | e |
Proto Germanic | e | i | a | ē | e |
Old English | e | i | æ | ǣ | e |
Middle Dutch | e | e | a | ā | e |
Old High German | e | i | a | ā | e |
Gothic | i | i | a | e | i |
Old Norse[1] | e | e | a | á | e |
In Old English the preterite is in æ/ǣ, as in class 4.
With West Saxon palatal diphthongization (after c, g)
With j-presents
Contracted, anomalous:
In Modern English this group has lost all group cohesion.
Class 5 verbs in Modern English: bid, eat, give, lie (= lie down), see, sit. Get, speak, tread, weave are now class 4.
In Old High German this group is relatively uniform. The model is geban, or for the j-presents, bitten.
In Modern German this group is little changed from Old High German:
The verb essen ("to eat") had a past participle giezzan in OHG; in MHG this became geezzen which was contracted to gezzen and then re-prefixed to gegezzen:
Class 5 verbs in modern German: essen, geben, genesen, geschehen, lesen, messen, sehen, treten, vergessen; with j-presents, bitten, liegen, sitzen.
In Dutch, class 5 is much as in German, except that the preterite retains the vowel length distinction which we also observed in class 4 above.
zien ("to see") has experienced a loss of the original /h/, with a resulting assimilation of the stem vowel to the vowel of the inflection, and shows Grammatischer Wechsel between this original /h/ and a /g/ in the preterite:
Class 5 verbs in Dutch: eten, geven, genezen, lezen, meten, treden, vergeten; anomalous: zien; with j-presents: bidden, liggen, zitten.
In Gothic:
Class 6, Sweet's "shake conjugation", represents all verbs in which the Proto-Germanic vowel was *a. PIE sources of this vowel included *h2e, *o, and a laryngeal between consonants.[2] Possibly in some cases the a may be an example of the a-grade of ablaut, though this is controversial. Like class 5, this class too has j-presents. Compare with Latin facio ("I do"): infinitive facere, indicative active perfect singular fēci, perfect passive participle factus.
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | |
Ablaut grade | e | e | ō | ō | zero |
Proto Indo-European | a | a | ō | ō | a |
Proto Germanic | a | a | ō | ō | a |
Old English | a | æ | ō | ō | a |
Middle Dutch | ā | ā | u(e) | u(e) | ā |
Old High German | a | e | uo | uo | a |
Gothic | a | a | o | o | a |
Old Norse | a | e | ó | ó | a |
In Old English
Contracted
With j-presents (and other anomalies)
The verb "to stand" has an anomalous loss of its -n- in the preterite:
In Modern English, shake, take and forsake come closest to the original vowel sequence. The consonant anomaly in stand is still visible, and is extended to the participle.
Class 6 verbs in modern English: draw, forsake, lade, shake, shape, shave, slay, stand, take. (Like most other classes in Modern English, this class has lost cohesion and now forms principal parts according to many different patterns.) Swear is now class 4. The adjective graven was originally a past participle of the now obsolete verb grave. Note that lade, shape, shave are now weak outside of their optionally strong past participle forms (laden, shapen, and shaven, respectively).
In Old High German the preterite is marked by the diphthong uo:
With j-present:
In Modern German the uo is monophthongised to a u.
However, the j-presents have instead taken an o in the preterite and participle, perhaps by analogy with class 2.
Class 6 verbs in modern German: fahren, graben, laden, schaffen, schlagen, tragen, waschen; also backen, fragen, though these are usually weak nowadays; with j-present: heben, schwören. The past tense and participle of stehen (stand, older stund, gestanden), which derive from a lost verb *standen, also belong to this class.
In Dutch, the regular class 6 verbs are close to German:
However the three j-presents have taken the vowel ie in the preterite, and have chosen three separate paths in the participle:
Class 6 verbs in Dutch are: dragen, graven, slaan, varen, and with j-present: heffen, scheppen, zweren; also "semi-strong" (i.e. with a strong preterite but a weak participle) jagen, vragen.
In Gothic:
Class 7, Sweet's "fall conjugation", is not based on an Indo-European ablaut sequence as such; rather, it is the class showing reduplication in Gothic and irregular ablaut patterning in the other branches. The place of reduplication in the Germanic preterite is a debated topic. One view is that class 7 represents all the verbs of classes 1 to 6 that were once characterized by reduplication in the preterite. Another view is that all strong preterites from all classes, as the reflexes of the reduplicating IE perfect, originally showed reduplication, but haplological processes eliminated the reduplicating syllable in nearly all verbs; however, those verbs whose present and preterite stem did not show a marked contrast in ablaut would therefore not have shown sufficient contrast without a preterite marker, so reduplication was originally retained in those verbs, which are the verbs categorized as class 7.
This situation did not last. East Germanic (Gothic) alone retained reduplication as the marker of the strong preterite in the verbs of class 7. Four examples from Gothic will illustrate this here. In each case the infinitive and the preterite singular are given, with the reduplication in bold print:
Class 7 in Gothic was divided into two types: those with vocalic alternation in the root and those with no alternation. The root vowel for the nonablauting type could be a(:), ái, áu, e, or o. The patterns that showed vocalic alternation between present and preterite stem were only e ~ o and ai ~ o; note that the o-vowel occurs on precisely the same forms that have reduplication, making it a redundant marking.
Outside Gothic, the retained reduplication of class 7 was itself eventually eliminated, although dialects of Old English and Old Norse do show a few relics:
Aside from these remnants, North and West Germanic eliminated reduplication in class 7, with the result that these verbs show only a limited variation of vowels, and have enough homogeneity to make it useful to see them as a single class. The principal characteristics of class 7 in West Germanic are:
In Old English the pattern is as follows:
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | |
Class 7a | x | x + umlaut | ē | ē | x |
Class 7b | x | x + umlaut | ēo | ēo | x |
Examples of class 7a:
Two verbs of class 7a have contracted present stems and grammatischer Wechsel:
Examples of class 7b:
In Modern English this class has lost its homogeneity:
Class 7 verbs in modern English: beat, blow, fall, hew, grow, hang, hold, know, throw.
In Old High German we find the same two groups, though they do not correspond exactly to those of Old English:
Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | |
Class 7a | x | x + umlaut | ia | ia | x |
Class 7b | x | x + umlaut | io | io | x |
Class 7a follows the pattern:
Class 7b follows the pattern:
In Modern German this class follows the uniform pattern x-ie-x:
However the two anomalous verbs have formed new present stems, eliminated grammatischer Wechsel and shortened the vowel in the preterite:
Class 7 verbs in modern German are: blasen, braten, fallen, halten, heißen, lassen, laufen, raten, rufen, schlafen, stoßen; anomalous: fangen, hängen. The past tense and participle of German gehen, ging gegangen, derive from a lost verb *gangen which belongs to this class.
In both Middle and Modern Dutch this class is very similar to German:
The verb "to hold" displays the Dutch phenomenon that in the letter combination -old- the L disappears and the vowel diphthongises in compensation:
Class 7 verbs in Dutch are: blazen, laten, lopen, raden*, roepen, slapen, stoten*, vallen; anomalous: hangen, vangen, houden. (The verbs with * are nowadays mostly semi-strong: raden raadde geraden and stoten stootte gestoten)
In older Dutch grammars e.g. the one by Brill, the class was subdivided into:
This class is now extinct, its only relic being the verb uitscheiden - scheed uit - uitgescheiden
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