déclenchevsdéclencheurConfusable pair

Quick tell: déclenche is a noun, déclencheur is an adjective, so they fill different roles in a sentence.

Which to use

“déclenche” is a noun and “déclencheur” is an adjective - they look or sound alike but fill different roles in a sentence.

#11,205
“déclenche” frequency rank
#19,520
“déclencheur” frequency rank
30725
confusion score

Side-by-Side Comparison

Feature déclenche déclencheur
Definition Appareil qui sert à séparer deux pièces d’une machine. Qui déclenche, qui initie.

Where the eye mixes déclenche and déclencheur

Muted = shared; highlighted = the visual trap. They share 9 letters in sequence. déclenche runs 9 letters (CVCCVCCCV) against déclencheur's 11 (CVCCVCCCVVC) - the length gap alone is often enough to separate them once you know to check it.

9 ch
déclenche
11 ch
déclencheur

Why the eye confuses déclenche with déclencheur

These two trip readers on the page rather than in the ear: déclenche is \de.klɑ̃ʃ\ while déclencheur is \de.klɑ̃.ʃœʁ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “déclenche” sits inside “déclencheur”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 30725, derived from the frequency rank of both members and their visual similarity.

déclenche is recorded at frequency rank #11,205, classified as anoun, pronounced \de.klɑ̃ʃ\. déclencheur is at rank #19,520, tagged as anadj, pronounced \de.klɑ̃.ʃœʁ\.

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 30725, this pair ranks #308,361 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of déclenche vs déclencheur

Shared letters: cdehlné. Private to "déclenche": -. Private to "déclencheur": ru.

"déclenche" · 9 letters · shape CVCCVCCCV  ·  "déclencheur" · 11 letters · shape CVCCVCCCVVC

Frequently Asked Questions

Can "déclenche" and "déclencheur" be used interchangeably?
No - they are not even the same part of speech. "déclenche" is a noun and "déclencheur" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "déclenche" or "déclencheur"?
"déclenche" is the more common of the two: it sits at frequency rank #11,205 in our French list, against #19,520 for "déclencheur". 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 "déclenche" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "déclencheur" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #308,361 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "déclenche" and "déclencheur" also get mixed up with nearby pairs, the highest-scored neighbour is "déclenchées vs déclencheur". Nearby pair

Confusion rank #308,361 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