Which to use
“mu” and “must” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #14,985
- “mu” frequency rank
- #16,189
- “must” frequency rank
- 31174
- confusion score
Side-by-Side Comparison
| Feature | mu | must |
|---|---|---|
| Definition | μ, Μ, douzième lettre et huitième consonne de l’alphabet grec. | Devoir incontournable ; obligation sociale. |
Where the eye mixes mu and must
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: mu vs must
A purely visual mix-up. mu (\my\) and must (\mœst\) 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 “must”. Our composite confusion score for this pair is 31174, derived from the frequency rank of both members and their visual similarity.
mu is recorded at frequency rank #14,985, classified as anoun, pronounced \my\. must is at rank #16,189, tagged as anoun, pronounced \mœst\.
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 31174, this pair ranks #305,511 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of mu vs must
Shared letters: mu. Private to "mu": -. Private to "must": st.
"mu" · 2 letters · shape CV · "must" · 4 letters · shape CVCC
Known mistypes of this pair
- must ← mmust · msut · musst · mustt · muts · umst
Frequently Asked Questions
Can "mu" and "must" be used interchangeably?
In ordinary French text, does "mu" or "must" show up more?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "mu" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "must" - compare definitions side by side with the headword page. Word entry
- This pair ranks #305,511 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "mu" and "must" also get mixed up with nearby pairs, the highest-scored neighbour is "mud vs must". 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 #305,511 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.