Which to use
“mois” is a noun and “moisi” is an adjective - they look or sound alike but fill different roles in a sentence.
- #184
- “mois” frequency rank
- #32,913
- “moisi” frequency rank
- 33097
- confusion score
Side-by-Side Comparison
| Feature | mois | moisi |
|---|---|---|
| Definition | Chacune des douze parties de l’année, dont chacune contient trente ou trente et un jours, excepté la seconde (février), qui est de vingt-huit jours dans les années ordinaires, et de vingt-neuf dans les années bissextiles. | Attaqué par la moisissure. |
Where the spellings diverge
Shared letters are muted; the letters that actually set mois and moisi apart are highlighted. They share 4 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: mois is \mwa\ while moisi is \mwa.zi\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “mois” sits inside “moisi”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 33097, derived from the frequency rank of both members and their visual similarity.
mois is recorded at frequency rank #184, classified as anoun, pronounced \mwa\. moisi is at rank #32,913, tagged as anadj, pronounced \mwa.zi\.
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 33097, this pair ranks #292,881 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of mois vs moisi
Shared letters: imos. Private to "mois": -. Private to "moisi": -.
"mois" · 4 letters · shape CVVC · "moisi" · 5 letters · shape CVVCV
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "mois" and "moisi" be used interchangeably?
Which is more common, "mois" or "moisi"?
Remembering mois vs moisi
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “mois”; for an adjective, it's “moisi”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “mois” entry
- Browse more pairs most likely to be confused. Most confusable