Skip to content

Pronouncing -s endings

The -s ending on plurals and third-person verbs is pronounced three ways. After a hissing or buzzing sound — s, z, sh, zh, ch or j — it adds a syllable and is said /ɪz/, as in buses and watches. After any other voiceless sound it is said /s/, as in cats and books. After any other voiced sound or a vowel it is said /z/, as in dogs and boys. English speakers apply this without thinking, which is why the written s misleads learners.

The rule in one line

Look at the sound before the -s. If it hisses or buzzes, the ending becomes a syllable of its own. Otherwise it matches that sound's voicing: voiceless takes /s/, voiced takes /z/. It is the same logic as -ed endings, applied to a different ending.

1. /ɪz/ — after a hissing or buzzing sound

After s, z, sh, zh, ch or j the ending has to become its own syllable, because two hissing sounds cannot run together. has one syllable; has two.

2. /s/ — after a voiceless sound

After p, t, k, f or a voiceless th. No extra syllable.

3. /z/ — after a voiced sound or a vowel

Everything else, which is most words. This is why the written s so often sounds like a z — ends in a buzz, not a hiss.

It is the same rule three times over

This one pattern covers plural nouns (), third-person verbs (), possessives (Rita's) and contractions (it's). Learn it once and four pieces of grammar stop being a pronunciation problem.

The plurals that ignore it

Some nouns ending in a voiceless th or f switch to voiced before the plural s, changing the stem sound rather than just adding one.

And a handful take no s at all: , , , , .

Practise this

Cats, dogs, buses: the plural S has three sounds. Hear when it is S, Z or IZ.
15
Show the 15 words

Walked, played, wanted: -ed has three sounds, T, D and ID. Learn which verb takes which.
15
Show the 15 words

Nation, education, question: the -tion ending and where the stress always falls. Hear the rule.
15
Show the 15 words

Separate the adjective, separate the verb: -ate changes vowel by word class. Hear both forms.
15
Show the 15 words

Quick pronunciation tips

Read slowly first. Pronounce each syllable deliberately before trying to blend them at full speed. Rushing hides the vowel and consonant shapes your ear needs to learn.

Record yourself. Most phones have a voice memo app — record a word, then compare it to the playback here. Hearing the gap between your version and the model accent makes targeted practice far easier.

Focus on one accent. Jumping between American, British and Australian in the same session creates confusion. Pick the accent you encounter most and stick with it until the patterns feel natural.

Keep going

Every word above is a button. Set the accent and voice you want on the main screen, then come back — the guides use whatever you chose. To hear two accents against each other, use Compare; to test whether you can actually hear a contrast, use the listening quiz.

Sources and review

https://en.wikipedia.org/wiki/English_phonology
https://en.wikipedia.org/wiki/English_orthography
https://dictionary.cambridge.org/help/phonetics.html
How this guide was checked
Written against the references above and last checked against them on 2026-09-22. Phonetic symbols follow the International Phonetic Association chart; where two references disagree on a transcription, the dictionary entry is preferred. Spot an error? The editorial policy explains how corrections are handled.

Last reviewed 2026-09-22 · Learn Pronounce

Look up any word's IPA