fiefvsfleWhich spelling fits?

Quick tell: fief is a noun, fle is a verb, so they fill different roles in a sentence.

Which to use

“fief” is a noun and “fle” is a verb - they look or sound alike but fill different roles in a sentence.

#9,833
“fief” frequency rank
#39,300
“fle” frequency rank
49133
confusion score

Side-by-Side Comparison

Feature fief fle
Definition Domaine noble dont le détenteur, le vassal, devait l’hommage et ordinairement aussi quelque redevance, quelque service, etc., au seigneur, possesseur du domaine. Dormir.

Where the eye mixes fief and fle

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

4 ch
fief
3 ch
fle

Visual trap between fief and fle

These two trip readers on the page rather than in the ear: fief is \fjɛf\ while fle is \ˈfle\. 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 (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 49133, derived from the frequency rank of both members and their visual similarity.

fief is recorded at frequency rank #9,833, classified as anoun, pronounced \fjɛf\. fle is at rank #39,300, tagged as averb, pronounced \ˈfle\.

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 49133, this pair ranks #173,206 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fief vs fle

Shared letters: ef. Private to "fief": i. Private to "fle": l.

"fief" · 4 letters · shape CVVC  ·  "fle" · 3 letters · shape CCV

Known mistypes of this pair

  • fieffeif · ffief · fieff · fife · ifef

Frequently Asked Questions

Can "fief" and "fle" be used interchangeably?
No - they are not even the same part of speech. "fief" is a noun and "fle" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "fief" or "fle"?
"fief" is the more common of the two: it sits at frequency rank #9,833 in our French list, against #39,300 for "fle". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "fief" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fle" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #173,206 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "fief" and "fle" also get mixed up with nearby pairs, the highest-scored neighbour is "filez vs fle". 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 #173,206 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