Which to use
“bien” is an adverb and “bleu” is an adjective - they look or sound alike but fill different roles in a sentence.
- #53
- “bien” frequency rank
- #1,470
- “bleu” frequency rank
- 1523
- confusion score
Side-by-Side Comparison
| Feature | bien | bleu |
|---|---|---|
| Definition | Marque un certain degré de perfection et d’utilité. | De la couleur du ciel en plein jour quand il est dégagé. #0000FF |
Where the eye mixes bien and bleu
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: bien vs bleu
These two trip readers on the page rather than in the ear: bien is \bjɛ̃\ while bleu is \blø\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adverb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 1523, derived from the frequency rank of both members and their visual similarity.
bien is recorded at frequency rank #53, classified as anadv, pronounced \bjɛ̃\. bleu is at rank #1,470, tagged as anadj, pronounced \blø\.
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 1523, this pair ranks #437,899 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of bien vs bleu
Shared letters: be. Private to "bien": in. Private to "bleu": lu.
"bien" · 4 letters · shape CVVC · "bleu" · 4 letters · shape CCVV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "bien" for "bleu" ever safe?
In ordinary French text, does "bien" or "bleu" show up more?
Useful next steps
Eye-level mix-up between "bien" and "bleu" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "bien" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "bleu" - compare definitions side by side with the headword page. Word entry
- This pair ranks #437,899 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "bien" and "bleu" also get mixed up with nearby pairs, the highest-scored neighbour is "bleu vs Blier". 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 #437,899 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.