Which to use
“réduire” and “réduise” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #1,754
- “réduire” frequency rank
- #40,980
- “réduise” frequency rank
- 42734
- confusion score
Side-by-Side Comparison
| Feature | réduire | réduise |
|---|---|---|
| Definition | Restreindre, diminuer, ou faire diminuer. | Première personne du singulier du présent du subjonctif de réduire. |
Where the eye mixes réduire and réduise
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. réduire and réduise follow the identical consonant-vowel pattern (CVCVVCV). Same shape at a glance is often the real trap, independent of shared letters.
Visual trap between réduire and réduise
A purely visual mix-up. réduire (\ʁe.dɥiʁ\) and réduise (\ʁe.dɥiz\) 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 a single letter - r in “réduire” becomes s in “réduise”. Our composite confusion score for this pair is 42734, derived from the frequency rank of both members and their visual similarity.
réduire is recorded at frequency rank #1,754, classified as averb, pronounced \ʁe.dɥiʁ\. réduise is at rank #40,980, tagged as averb, pronounced \ʁe.dɥiz\.
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 42734, this pair ranks #223,334 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of réduire vs réduise
Shared letters: deirué. Private to "réduire": -. Private to "réduise": s.
"réduire" · 7 letters · shape CVCVVCV · "réduise" · 7 letters · shape CVCVVCV
Frequently Asked Questions
Is swapping "réduire" for "réduise" ever safe?
Frequency check: "réduire" vs "réduise" - which ranks higher?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "réduire" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "réduise" - compare definitions side by side with the headword page. Word entry
- This pair ranks #223,334 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "réduire" and "réduise" also get mixed up with nearby pairs, the highest-scored neighbour is "réduise vs réduisez". Nearby pair
Confusion rank #223,334 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.