muvsmuttTell them apart

Which to use

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

#11,427
“mu” frequency rank
#31,665
“mutt” frequency rank
43092
confusion score

Side-by-Side Comparison

Feature mu mutt
Definition The 12th letter of the Modern Greek alphabet. A mongrel dog (or sometimes cat); an animal of mixed breed or uncertain origin.

Where the eye mixes mu and mutt

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

2 ch
mu
4 ch
mutt

Look-alike desk: mu vs mutt

A purely visual mix-up. mu (/mjuː/) 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 differ by 2 extra letter(s) - “mu” sits inside “mutt”. Our composite confusion score for this pair is 43092, derived from the frequency rank of both members and their visual similarity.

mu is recorded at frequency rank #11,427, classified as anoun, pronounced /mjuː/. 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 43092, this pair ranks #243,302 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of mu vs mutt

Shared letters: mu. Private to "mu": -. Private to "mutt": t.

"mu" · 2 letters · shape CV  ·  "mutt" · 4 letters · shape CVCC

Known mistypes of this pair

  • muttmmutt · mtut · mut · umtt

Frequently Asked Questions

Do "mu" and "mutt" mean the same thing in a sentence?
No. They are said differently (/mjuː/ versus /mʌt/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "mu" vs "mutt" - which ranks higher?
"mu" is the more common of the two: it sits at frequency rank #11,427 in our English list, against #31,665 for "mutt". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "mu" 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 #243,302 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "mu" and "mutt" also get mixed up with nearby pairs, the highest-scored neighbour is "muda vs mutt". 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 #243,302 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