rot vs rou, What's the Difference?

Which to use

“rot” and “rou” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#34,730
“rot” frequency rank: #48,169
“rou” frequency rank: 82899
confusion score

Side-by-Side Comparison

Feature	rot	rou
Definition	Émission par la bouche, et avec bruit, de gaz stomacaux.	Synonyme de rohu (poisson).

Where the eye mixes rot and rou

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. rot (CVC) and rou (CVV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch

rot

3 ch

rou

Why the eye confuses rot with rou

A purely visual mix-up. rot (\ʁo\) and rou (\ʁu\) 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 - t in “rot” becomes u in “rou”. Our composite confusion score for this pair is 82899, derived from the frequency rank of both members and their visual similarity.

rot is recorded at frequency rank #34,730, classified as anoun, pronounced \ʁo\. rou is at rank #48,169, tagged as anoun, pronounced \ʁu\.

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 82899, this pair ranks #15,799 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of rot vs rou

Shared letters: or. Private to "rot": t. Private to "rou": u.

"rot" · 3 letters · shape CVC · "rou" · 3 letters · shape CVV

Frequently Asked Questions

Is swapping "rot" for "rou" ever safe?

No. They are said differently (\ʁo\ versus \ʁu\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

In ordinary French text, does "rot" or "rou" show up more?

"rot" is the more common of the two: it sits at frequency rank #34,730 in our French list, against #48,169 for "rou". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

Full dictionary entry for "rot" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "rou" - compare definitions side by side with the headword page. Word entry
This pair ranks #15,799 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"rot" and "rou" also get mixed up with nearby pairs, the highest-scored neighbour is "rou vs roya". Nearby pair

Confusion rank #15,799 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.