flatvsflouTell them apart

Which to use

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

#26,369
“flat” frequency rank
#7,440
“flou” frequency rank
33809
confusion score

Side-by-Side Comparison

Feature flat flou
Definition Se dit du ver à soie atteint de flacherie. D'un coloris sans vigueur, qui manque de netteté des contours ou des arêtes.

Where the eye mixes flat and flou

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
flat
4 ch
flou

Look-alike desk: flat vs flou

A purely visual mix-up. flat (\fla\) and flou (\flu\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 33809, derived from the frequency rank of both members and their visual similarity.

flat is recorded at frequency rank #26,369, classified as anadj, pronounced \fla\. flou is at rank #7,440, tagged as anadj, pronounced \flu\.

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 33809, this pair ranks #288,124 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of flat vs flou

Shared letters: fl. Private to "flat": at. Private to "flou": ou.

"flat" · 4 letters · shape CCVC  ·  "flou" · 4 letters · shape CCVV

Known mistypes of this pair

  • flatfalt · fflat · flatt · fllat · flta · lfat
  • floufflou · fllou · folu · lfou

Frequently Asked Questions

Do "flat" and "flou" mean the same thing in a sentence?
No. They are said differently (\fla\ versus \flu\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "flat" or "flou"?
"flou" is the more common of the two: it sits at frequency rank #7,440 in our French list, against #26,369 for "flat". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "flat" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "flou" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #288,124 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "flat" and "flou" also get mixed up with nearby pairs, the highest-scored neighbour is "ffa vs flat". 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 #288,124 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