flousvsfourTell them apart

Quick tell: flous is a adjective, four is a noun, so they fill different roles in a sentence.

Which to use

“flous” is an adjective and “four” is a noun - they look or sound alike but fill different roles in a sentence.

#30,613
“flous” frequency rank
#4,150
“four” frequency rank
34763
confusion score

Side-by-Side Comparison

Feature flous four
Definition Masculin pluriel de flou. (radiotéléphonie) Mot de code radiotéléphonique de l'OACI, OTAN et SIA pour le chiffre 4.

Where the eye mixes flous and four

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
flous
4 ch
four

Why the eye confuses flous with four

These two trip readers on the page rather than in the ear: flous is \flu\ while four is \ˈfoa\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 34763, derived from the frequency rank of both members and their visual similarity.

flous is recorded at frequency rank #30,613, classified as anadj, pronounced \flu\. four is at rank #4,150, tagged as anoun, pronounced \ˈfoa\.

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 34763, this pair ranks #281,566 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of flous vs four

Shared letters: fou. Private to "flous": ls. Private to "four": r.

"flous" · 5 letters · shape CCVVC  ·  "four" · 4 letters · shape CVVC

Known mistypes of this pair

  • flousfflous · fllous · flosu · flouss · fluos · folus · lfous
  • fourffour · foru · fourr · fuor · ofur

Frequently Asked Questions

Is swapping "flous" for "four" ever safe?
No - they are not even the same part of speech. "flous" is an adjective and "four" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "flous" or "four" show up more?
"four" is the more common of the two: it sits at frequency rank #4,150 in our French list, against #30,613 for "flous". 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 "flous" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "four" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #281,566 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "flous" and "four" also get mixed up with nearby pairs, the highest-scored neighbour is "flour vs flous". 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 #281,566 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