diffusévsdiffuseurConfusable pair

Quick tell: diffusé is a verb, diffuseur is an adjective, so they fill different roles in a sentence.

Which to use

“diffusé” is a verb and “diffuseur” is an adjective - they look or sound alike but fill different roles in a sentence.

#4,322
“diffusé” frequency rank
#19,258
“diffuseur” frequency rank
23580
confusion score

Side-by-Side Comparison

Feature diffusé diffuseur
Definition Participe passé masculin singulier de diffuser. Qui diffuse.

Where the eye mixes diffusé and diffuseur

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.

7 ch
diffusé
9 ch
diffuseur

Why the eye confuses diffusé with diffuseur

These two trip readers on the page rather than in the ear: diffusé is \di.fy.ze\ while diffuseur is \di.fy.zœʁ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 23580, derived from the frequency rank of both members and their visual similarity.

diffusé is recorded at frequency rank #4,322, classified as averb, pronounced \di.fy.ze\. diffuseur is at rank #19,258, tagged as anadj, pronounced \di.fy.zœʁ\.

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 23580, this pair ranks #351,671 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of diffusé vs diffuseur

Shared letters: dfisu. Private to "diffusé": é. Private to "diffuseur": er.

"diffusé" · 7 letters · shape CVCCVCV  ·  "diffuseur" · 9 letters · shape CVCCVCVVC

Known mistypes of this pair

  • diffuseurddiffuseur · dfifuseur · diffsueur · diffuesur · diffuseru · diffuseurr · diffusseur · diffusuer

Frequently Asked Questions

Do "diffusé" and "diffuseur" mean the same thing in a sentence?
No - they are not even the same part of speech. "diffusé" is a verb and "diffuseur" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "diffusé" or "diffuseur"?
"diffusé" is the more common of the two: it sits at frequency rank #4,322 in our French list, against #19,258 for "diffuseur". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "diffusé" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "diffuseur" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #351,671 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "diffusé" and "diffuseur" also get mixed up with nearby pairs, the highest-scored neighbour is "diffusera vs diffuseur". 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 #351,671 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