réduisvsrequinWhich spelling fits?

Quick tell: réduis is a verb, requin is a noun, so they fill different roles in a sentence.

Which to use

“réduis” is a verb and “requin” is a noun - they look or sound alike but fill different roles in a sentence.

#44,708
“réduis” frequency rank
#9,907
“requin” frequency rank
54615
confusion score

Side-by-Side Comparison

Feature réduis requin
Definition Première personne du singulier de l’indicatif présent de réduire. Espèce de poisson de mer prédateur de la classe des chondrichthyens (Chondrichthyens), à la silhouette fuselée, hydrodynamique, ayant plusieurs rangées de dents tranchantes à chacune des 2 mâchoires, une nageoire dorsale, deux pectorales, et une nageoire caudale hétérocerque (asymétrique), ayant cinq à sept fentes branchiales sur le côté, et une peau rugueuse (denticules dermiques).

Where the eye mixes réduis and requin

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. réduis and requin follow the identical consonant-vowel pattern (CVCVVC). Same shape at a glance is often the real trap, independent of shared letters.

6 ch
réduis
6 ch
requin

Look-alike desk: réduis vs requin

These two trip readers on the page rather than in the ear: réduis is \ʁe.dɥi\ while requin is \ʁə.kɛ̃\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 3 positions, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 54615, derived from the frequency rank of both members and their visual similarity.

réduis is recorded at frequency rank #44,708, classified as averb, pronounced \ʁe.dɥi\. requin is at rank #9,907, tagged as anoun, pronounced \ʁə.kɛ̃\.

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 54615, this pair ranks #132,828 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of réduis vs requin

Shared letters: iru. Private to "réduis": dsé. Private to "requin": enq.

"réduis" · 6 letters · shape CVCVVC  ·  "requin" · 6 letters · shape CVCVVC

Known mistypes of this pair

  • requin ← erquin · reqiun · reqquin · requinn · requni · reuqin · rqeuin · rrequin

Frequently Asked Questions

Can "réduis" and "requin" be used interchangeably?
No - they are not even the same part of speech. "réduis" is a verb and "requin" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "réduis" or "requin" show up more?
"requin" is the more common of the two: it sits at frequency rank #9,907 in our French list, against #44,708 for "réduis". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "réduis" and "requin" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "réduis" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "requin" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #132,828 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "réduis" and "requin" also get mixed up with nearby pairs, the highest-scored neighbour is "réduis vs Reis". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #132,828 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