[b]→[ʔ]Certainty: 4/5Commonality: 2/5

Voiced bilabial plosive to Glottal stop

Debuccalization of voiced stops to a glottal stop is rarer than for voiceless stops, but occurs through lenition or as a specialized sound change in specific phonetic environments.

Phonetic Effects

Debuccalization, Lenition

Language Examples

K'ichean languages Mayan

b'→ʔ— Word-final bilabial implosives in multisyllabic words shift to glottal stops.

German dialects Germanic

b→ʔ— In some Bavarian varieties, stops merged and debuccalized before nasals.

Related Transformations

Reverse Devoicing T-glottalization style

More Germanic Shifts

[a] → [ã] — Assimilatory Nasalization [a] → [∅] — Elision [a] → [ʔ] — Glottalization [a] → [ə] — Vowel Reduction [æ] → [ɛ] — Vowel Raising

Sources & References

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