muffvsmuttTell them apart

Which to use

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

#41,774
“muff” frequency rank
#31,665
“mutt” frequency rank
73439
confusion score

Side-by-Side Comparison

Feature muff mutt
Definition A piece of fur or cloth, usually with open ends, used for keeping the hands warm. A mongrel dog (or sometimes cat); an animal of mixed breed or uncertain origin.

Where the eye mixes muff and mutt

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
muff
4 ch
mutt

Why the eye confuses muff with mutt

A purely visual mix-up. muff (/mʌf/) and mutt (/mʌt/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 73439, derived from the frequency rank of both members and their visual similarity.

muff is recorded at frequency rank #41,774, classified as anoun, pronounced /mʌf/. mutt is at rank #31,665, tagged as anoun, pronounced /mʌt/.

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 73439, this pair ranks #39,623 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of muff vs mutt

Shared letters: mu. Private to "muff": f. Private to "mutt": t.

"muff" · 4 letters · shape CVCC  ·  "mutt" · 4 letters · shape CVCC

Known mistypes of this pair

  • muffmfuf · mmuff · muf · umff
  • muttmmutt · mtut · mut · umtt

Frequently Asked Questions

Can "muff" and "mutt" be used interchangeably?
No. They are said differently (/mʌf/ versus /mʌt/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "muff" or "mutt" show up more?
"mutt" is the more common of the two: it sits at frequency rank #31,665 in our English list, against #41,774 for "muff". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "muff" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mutt" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #39,623 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "muff" and "mutt" also get mixed up with nearby pairs, the highest-scored neighbour is "muda vs muff". 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 #39,623 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