mathvsmouthWhat's the difference?

Which to use

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

#3,314
“math” frequency rank
#1,569
“mouth” frequency rank
4883
confusion score

Side-by-Side Comparison

Feature math mouth
Definition Clipping of mathematics. The front opening of a creature through which food is ingested.

Where the eye mixes math and mouth

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
math
5 ch
mouth

Why the eye confuses math with mouth

A purely visual mix-up. math (/mæθ/) and mouth (/maʊθ/) 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 letter(s) in length. Our composite confusion score for this pair is 4883, derived from the frequency rank of both members and their visual similarity.

math is recorded at frequency rank #3,314, classified as anoun, pronounced /mæθ/. mouth is at rank #1,569, tagged as anoun, pronounced /maʊθ/.

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 4883, this pair ranks #517,342 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of math vs mouth

Shared letters: hmt. Private to "math": a. Private to "mouth": ou.

"math" · 4 letters · shape CVCC  ·  "mouth" · 5 letters · shape CVVCC

Known mistypes of this pair

  • mathamth · maht · mathh · matth · mmath · mtah
  • mouthmmouth · motuh · mouht · mouthh · moutth · muoth · omuth

Frequently Asked Questions

Can "math" and "mouth" be used interchangeably?
No. They are said differently (/mæθ/ versus /maʊθ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "math" vs "mouth" - which ranks higher?
"mouth" is the more common of the two: it sits at frequency rank #1,569 in our English list, against #3,314 for "math". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "math" and "mouth" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "math" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mouth" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #517,342 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "math" and "mouth" also get mixed up with nearby pairs, the highest-scored neighbour is "marl vs math". 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 #517,342 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