Trisyllabic laxing

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Trisyllabic laxing or trisyllabic shortening is a process in English whereby tense vowels (which are long vowels or diphthongs) become lax (i.e. short monophthongs (lax) in word formation) when followed by two syllables, of which the first syllable is unstressed. This process is detailed in Chomsky & Halle's Sound Pattern of English.

Tense Vowel Lax Vowel examples
ɛ serene, serenity: /səˈrn, səˈrɛ.nə.ti/
impede, impediment: /ɪmˈpd, ɪmˈpɛ.də.mənt/
æ profane, profanity: /prəˈfn, prəˈfæ.nə.ti/
grateful, gratitude: /ˈgrt.fəl, ˈgræ.təˌt(j)uːd/
ɪ divine, divinity: /dəˈvn, dəˈvɪ.nə.ti/
derive, derivative: /dəˈrv, dəˈrɪ.və.tɪv/
ʌ profound, profundity: /prəˈfnd, prəˈfʌn.də.ti/
pronounce, pronunciation: /prəˈnns, prəˌnʌn.siˈeɪ.ʃən/
ɒ (US: ɑ) school, scholarly: /ˈskl, ˈskɒ.lər.li/
əʊ (US: oʊ) ɒ (US: ɑ) provoke, provocative: /prəˈvəʊk, prəˈvɒ.kə.tɪv/
sole, solitude: /ˈsəʊl, ˈsɒ.ləˌt(j)uːd/



[edit] Bibliography

  • Chomsky, Noam; & Halle, Morris. (1968). The sound pattern of English. New York: Harper & Row.