Which to use
“mm” is a symbol and “mur” is a noun - they look or sound alike but fill different roles in a sentence.
- #1,092
- “mm” frequency rank
- #1,531
- “mur” frequency rank
- 2623
- confusion score
Side-by-Side Comparison
| Feature | mm | mur |
|---|---|---|
| Definition | Symbole du millimètre, unité de mesure de longueur du Système international (SI), valant 0,001 mètre (10⁻³ mètre). | Édification généralement verticale élevée en divers matériaux, pour enclore un espace, séparer des pièces, ou soutenir quelque chose. |
Where the eye mixes mm and mur
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: mm vs mur
These two trip readers on the page rather than in the ear: mm is \mi.li.mɛtʁ\ while mur is \myʁ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (symbol vs noun), which is usually the fastest check. Our composite confusion score for this pair is 2623, derived from the frequency rank of both members and their visual similarity.
mm is recorded at frequency rank #1,092, classified as asymbol, pronounced \mi.li.mɛtʁ\. mur is at rank #1,531, tagged as anoun, pronounced \myʁ\.
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 2623, this pair ranks #435,781 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of mm vs mur
Shared letters: m. Private to "mm": -. Private to "mur": ru.
"mm" · 2 letters · shape CC · "mur" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "mm" for "mur" ever safe?
Which is more common, "mm" or "mur"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "mm" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "mur" - compare definitions side by side with the headword page. Word entry
- This pair ranks #435,781 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "mm" and "mur" also get mixed up with nearby pairs, the highest-scored neighbour is "mur vs MWh". Nearby pair
Confusion rank #435,781 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.