plural voicing

Core Rule

Plural voicing describes how the English plural ending -s/-es is pronounced as /z/ after a voiced sound. This is a phonological process driven by assimilation: voiced sounds prefer a voiced suffix to maintain smooth airflow and efficiency in speech. It affects pronunciation, not spelling.

Articulation Guide

To produce /z/, place the tongue close to the alveolar ridge, create a narrow channel, and keep the vocal cords vibrating. Air flows continuously without a burst. The mouth remains relaxed. The contrast with /s/ is entirely voicing.

Word Analysis

• aids: aid ends with voiced /d/, so the plural is /eɪdz/.
• cheers: cheer ends with voiced /r/, pronounced /tʃɪrz/.
• guys: guy ends with a vowel /aɪ/, resulting in /ɡaɪz/.

Pitfalls to Avoid

Do not default to /s/ because of the letter s. Always check whether the preceding sound is voiced. Also, distinguish /z/ from /ɪz/, which only occurs after sibilant sounds.