mouthvsmouthsWhich spelling fits?

Which to use

“mouth” and “mouths” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#1,569
“mouth” frequency rank
#10,891
“mouths” frequency rank
12460
confusion score

Side-by-Side Comparison

Feature mouth mouths
Definition The front opening of a creature through which food is ingested. plural of mouth

Where the eye mixes mouth and mouths

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. mouth runs 5 letters (CVVCC) against mouths's 6 (CVVCCC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
mouth
6 ch
mouths

Visual trap between mouth and mouths

A purely visual mix-up. mouth (/maʊθ/) and mouths (/maʊðz/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 extra letter(s) - “mouth” sits inside “mouths”. Our composite confusion score for this pair is 12460, derived from the frequency rank of both members and their visual similarity.

mouth is recorded at frequency rank #1,569, classified as anoun, pronounced /maʊθ/. mouths is at rank #10,891, tagged as anoun, pronounced /maʊðz/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 12460, this pair ranks #481,440 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of mouth vs mouths

Shared letters: hmotu. Private to "mouth": -. Private to "mouths": s.

"mouth" · 5 letters · shape CVVCC  ·  "mouths" · 6 letters · shape CVVCCC

Known mistypes of this pair

  • mouth ← mmouth · motuh · mouht · mouthh · moutth · muoth · omuth
  • mouths ← mmouths · motuhs · mouhts · mouthhs · mouthss · moutsh · moutths · muoths

Frequently Asked Questions

Is swapping "mouth" for "mouths" ever safe?
No. They are said differently (/maʊθ/ versus /maʊðz/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "mouth" vs "mouths" - which ranks higher?
"mouth" is the more common of the two: it sits at frequency rank #1,569 in our English list, against #10,891 for "mouths". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "mouth" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mouths" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #481,440 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "mouth" and "mouths" also get mixed up with nearby pairs, the highest-scored neighbour is "Meath vs mouth". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #481,440 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list