masvsmustWhat's the difference?

Which to use

“mas” and “must” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#9,694
“mas” frequency rank
#16,189
“must” frequency rank
25883
confusion score

Side-by-Side Comparison

Feature mas must
Definition Ferme dans le midi de la France. Devoir incontournable ; obligation sociale.

Where the eye mixes mas and must

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

3 ch
mas
4 ch
must

Why the eye confuses mas with must

A purely visual mix-up. mas (\mas\) 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 1 letter(s) in length. Our composite confusion score for this pair is 25883, derived from the frequency rank of both members and their visual similarity.

mas is recorded at frequency rank #9,694, classified as anoun, pronounced \mas\. 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 25883, this pair ranks #338,339 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of mas vs must

Shared letters: ms. Private to "mas": a. Private to "must": tu.

"mas" · 3 letters · shape CVC  ·  "must" · 4 letters · shape CVCC

Known mistypes of this pair

  • mustmmust · msut · musst · mustt · muts · umst

Frequently Asked Questions

Is swapping "mas" for "must" ever safe?
No. They are said differently (\mas\ versus \mœst\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "mas" or "must"?
"mas" is the more common of the two: it sits at frequency rank #9,694 in our French list, against #16,189 for "must". 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 "mas" 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 #338,339 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "mas" 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 #338,339 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list