eau vs eo, What's the Difference?

Which to use

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

#287
“eau” frequency rank: #43,418
“eo” frequency rank: 43705
confusion score

Side-by-Side Comparison

Feature	eau	eo
Definition	Liquide transparent, incolore, inodore et insipide à l’état pur, qui est le principal constituant des lacs, rivières, mers et océans.	Je : première personne du singulier au cas sujet.

Letter map: eau vs eo

Shared letters muted; letters that set eau and eo apart highlighted. Shared run: 1.

3 ch

eau

2 ch

Spelling & dictionary notes on eau vs eo

eau and eo are indexed as a confusable French pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 43705, derived from the frequency rank of both members and their visual similarity.

eau is recorded at frequency rank #287, classified as anoun, pronounced \o\. eo is at rank #43,418, tagged as anoun.

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 43705, this pair ranks #216,073 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of eau vs eo

Shared letters: e. Private to "eau": au. Private to "eo": o.

"eau" · 3 letters · shape VVV · "eo" · 2 letters · shape VV

Frequently Asked Questions

Is swapping "eau" for "eo" ever safe?

No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Which is more common, "eau" or "eo"?

"eau" is the more common of the two: it sits at frequency rank #287 in our French list, against #43,418 for "eo". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pair "eau" vs "eo" is on the table, pick a follow-up below.

Full dictionary entry for "eau" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "eo" - compare definitions side by side with the headword page. Word entry
This pair ranks #216,073 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"eau" and "eo" also get mixed up with nearby pairs, the highest-scored neighbour is "eo vs EPO". Nearby pair

Confusion rank #216,073 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.