faiblevsfaiblitTell them apart

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

Which to use

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

#1,028
“faible” frequency rank
#36,842
“faiblit” frequency rank
37870
confusion score

Side-by-Side Comparison

Feature faible faiblit
Definition Qui est débile, qui manque de force, de vigueur. Troisième personne du singulier de l’indicatif présent de faiblir.

Where the eye mixes faible and faiblit

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. faible runs 6 letters (CVVCCV) against faiblit's 7 (CVVCCVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
faible
7 ch
faiblit

Why the eye confuses faible with faiblit

These two trip readers on the page rather than in the ear: faible is \fɛbl\ while faiblit is \fe.bli\. 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 37870, derived from the frequency rank of both members and their visual similarity.

faible is recorded at frequency rank #1,028, classified as anadj, pronounced \fɛbl\. faiblit is at rank #36,842, tagged as averb, pronounced \fe.bli\.

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 37870, this pair ranks #259,379 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of faible vs faiblit

Shared letters: abfil. Private to "faible": e. Private to "faiblit": t.

"faible" · 6 letters · shape CVVCCV  ·  "faiblit" · 7 letters · shape CVVCCVC

Known mistypes of this pair

  • faible ← afible · fabile · faibble · faibel · faiblle · failbe · ffaible
  • faiblit ← afiblit · fabilit · faibblit · faibilt · faiblitt · faibllit · faiblti · failbit

Frequently Asked Questions

Can "faible" and "faiblit" be used interchangeably?
No - they are not even the same part of speech. "faible" is an adjective and "faiblit" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "faible" or "faiblit"?
"faible" is the more common of the two: it sits at frequency rank #1,028 in our French list, against #36,842 for "faiblit". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "faible" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "faiblit" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #259,379 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "faible" and "faiblit" also get mixed up with nearby pairs, the highest-scored neighbour is "faiblir vs faiblit". 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 #259,379 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