TellApart
← Hearing TH (think) and S apart
Word pair

mouth · mouse How to hear the difference

mouth · mouse7/20
Which word did you hear?

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Hear both words in 10 voices

Each row is one speaker saying both words. Play one, then the other, and switch to slow when the difference hides.

mouth
US IPA: /maʊθ/
mouse
US IPA: /maʊs/
Speed
  • American woman, younger
  • American woman, older
  • American man, younger
  • American man, older
  • British woman, younger
  • British woman, older
  • British man, younger
  • British man, older
  • Australian woman
  • Australian man

What's different

The long "ow" glide is the same in both, so wait for the last sound. Mouse ends on a hiss you could hear across a room: high, sharp and steady. Mouth ends on a faint, flat breath through the teeth, which fades almost as soon as it starts.

Because th is so quiet, mouth can seem to stop at the vowel, or end in something like f. If you hear a clear hiss, it's mouse; anything softer is mouth. Watching helps too: in mouth, the tongue tip often shows between the teeth.

Studies: Thomson 2018

Listen for

TH is a soft, flat breath. S is a sharp hiss.

More word pairs with these sounds

Hearing TH (think) and S apart: all 15 pairs →
Test your ear18 words across L vs R, B vs V and TH vs S, in about 2 minutes. See which sounds you already hear apart.Take the listening test →

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