In phonetics and phonology, nonexplosive stops are stop consonants that lack the pressure build-up and burst release normally associated with stops. They are reported to occur in Ikwere, an Igboid (Niger–Congo) language of Nigeria.
Ikwere's two nonexplosive stops, transcribed as /ḅ/ and /ʼḅ/, correspond to labial-velars /k͡p/ and /ɡ͡b/, respectively, in most other Igboid languages, and implosives /ɓ̥/ and /ɓ/ in some varieties of Igbo. However, Ikwere's stops neither have velar contact nor use the glottalic airstream mechanism.