Which to use
“réacteur” is a noun and “réacteurs” is an adjective - they look or sound alike but fill different roles in a sentence.
- #10,232
- “réacteur” frequency rank
- #11,293
- “réacteurs” frequency rank
- 21525
- confusion score
Side-by-Side Comparison
| Feature | réacteur | réacteurs |
|---|---|---|
| Definition | Celui qui participe à une réaction. | Masculin pluriel de réacteur. |
Same sound, different letters: réacteur vs réacteurs
Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 8 letters. réacteur runs 8 letters (CVVCCVVC) against réacteurs's 9 (CVVCCVVCC) - the length gap alone is often enough to separate them once you know to check it.
Same sound, different spelling - réacteur / réacteurs
Say them out loud and nothing separates them: réacteur and réacteurs carry the same recorded pronunciation, \ʁe.ak.tœʁ\. Grammar is what tells them apart: one is anoun, the other anadjective, so most sentences will only accept one of them. They differ by 1 extra letter(s) - “réacteur” sits inside “réacteurs”. Our composite confusion score for this pair is 21525, derived from the frequency rank of both members and their visual similarity.
réacteur is recorded at frequency rank #10,232, classified as anoun, pronounced \ʁe.ak.tœʁ\. réacteurs is at rank #11,293, tagged as anadj, pronounced \ʁe.ak.tœʁ\.
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 21525, this pair ranks #362,722 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of réacteur vs réacteurs
Shared letters: acertué. Private to "réacteur": -. Private to "réacteurs": s.
"réacteur" · 8 letters · shape CVVCCVVC · "réacteurs" · 9 letters · shape CVVCCVVCC
Frequently Asked Questions
Can "réacteur" and "réacteurs" be used interchangeably?
Which is more common, "réacteur" or "réacteurs"?
Useful next steps
"réacteur" and "réacteurs" share a sound, keep the gloss open, then jump to the headword or a nearby trap.
- Full dictionary entry for "réacteur" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "réacteurs" - compare definitions side by side with the headword page. Word entry
- This pair ranks #362,722 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "réacteur" and "réacteurs" also get mixed up with nearby pairs, the highest-scored neighbour is "réacteurs vs recteurs". Nearby pair
Confusion rank #362,722 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.