coïncidentvscoïnciderWhich spelling fits?

Quick tell: coïncident is a adjective, coïncider is a verb, so they fill different roles in a sentence.

Which to use

“coïncident” is an adjective and “coïncider” is a verb - they look or sound alike but fill different roles in a sentence.

#37,256
“coïncident” frequency rank
#37,257
“coïncider” frequency rank
74513
confusion score

Side-by-Side Comparison

Feature coïncident coïncider
Definition Qui coïncide dans l’espace et dans le temps. S’ajuster l’un sur l’autre dans toutes les parties, en parlant de lignes, de surfaces.

Where the eye mixes coïncident and coïncider

Muted = shared; highlighted = the visual trap. They share 8 letters in sequence. coïncident runs 10 letters (CVCCCVCVCC) against coïncider's 9 (CVCCCVCVC) - the length gap alone is often enough to separate them once you know to check it.

10 ch
coïncident
9 ch
coïncider

Look-alike desk: coïncident vs coïncider

These two trip readers on the page rather than in the ear: coïncident is \kɔ.ɛ̃.si.dɑ̃\ while coïncider is \kɔ.ɛ̃.si.de\. 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 (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 74513, derived from the frequency rank of both members and their visual similarity.

coïncident is recorded at frequency rank #37,256, classified as anadj, pronounced \kɔ.ɛ̃.si.dɑ̃\. coïncider is at rank #37,257, tagged as averb, pronounced \kɔ.ɛ̃.si.de\.

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 74513, this pair ranks #36,916 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of coïncident vs coïncider

Shared letters: cdeinoï. Private to "coïncident": t. Private to "coïncider": r.

"coïncident" · 10 letters · shape CVCCCVCVCC  ·  "coïncider" · 9 letters · shape CVCCCVCVC

Frequently Asked Questions

Is swapping "coïncident" for "coïncider" ever safe?
No - they are not even the same part of speech. "coïncident" is an adjective and "coïncider" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "coïncident" or "coïncider"?
"coïncident" is the more common of the two: it sits at frequency rank #37,256 in our French list, against #37,257 for "coïncider". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "coïncident" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "coïncider" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #36,916 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "coïncident" and "coïncider" also get mixed up with nearby pairs, the highest-scored neighbour is "coincidence vs coïncident". Nearby pair

Confusion rank #36,916 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