fiervsflyerTell them apart

Quick tell: fier is a adjective, flyer is a verb, so they fill different roles in a sentence.

Which to use

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

#2,365
“fier” frequency rank
#42,882
“flyer” frequency rank
45247
confusion score

Side-by-Side Comparison

Feature fier flyer
Definition Qui éprouve une envie d’amour-propre souvent fondée. Déguerpir, partir rapidement.

Where the eye mixes fier and flyer

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

4 ch
fier
5 ch
flyer

Why the eye confuses fier with flyer

These two trip readers on the page rather than in the ear: fier is \fjɛʁ\ while flyer is \fla.je\. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 45247, derived from the frequency rank of both members and their visual similarity.

fier is recorded at frequency rank #2,365, classified as anadj, pronounced \fjɛʁ\. flyer is at rank #42,882, tagged as averb, pronounced \fla.je\.

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 45247, this pair ranks #204,210 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fier vs flyer

Shared letters: efr. Private to "fier": i. Private to "flyer": ly.

"fier" · 4 letters · shape CVVC  ·  "flyer" · 5 letters · shape CCVVC

Known mistypes of this pair

  • fierfeir · ffier · fierr · ifer
  • flyerfflyer · fleyr · fllyer · flyerr · flyre · flyyer · fyler · lfyer

Frequently Asked Questions

Is swapping "fier" for "flyer" ever safe?
No - they are not even the same part of speech. "fier" is an adjective and "flyer" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "fier" or "flyer"?
"fier" is the more common of the two: it sits at frequency rank #2,365 in our French list, against #42,882 for "flyer". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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 "fier" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "flyer" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #204,210 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "fier" and "flyer" also get mixed up with nearby pairs, the highest-scored neighbour is "flour vs flyer". 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 #204,210 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