cilvscléWhich spelling fits?

Which to use

“cil” and “clé” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#33,611
“cil” frequency rank
#1,987
“clé” frequency rank
35598
confusion score

Side-by-Side Comparison

Feature cil clé
Definition Poil des paupières. Instrument de métal que l’on introduit dans une serrure pour ouvrir ou fermer un accès. Ancienne clé à panneton que l'on place et fait tourner dans la serrure d'une porte, d'un coffre, etc.

Where the eye mixes cil and clé

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

3 ch
cil
3 ch
clé

Why the eye confuses cil with clé

A purely visual mix-up. cil (\sil\) and clé (\kle\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 35598, derived from the frequency rank of both members and their visual similarity.

cil is recorded at frequency rank #33,611, classified as anoun, pronounced \sil\. clé is at rank #1,987, tagged as anoun, pronounced \kle\.

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 35598, this pair ranks #275,553 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cil vs clé

Shared letters: cl. Private to "cil": i. Private to "clé": é.

"cil" · 3 letters · shape CVC  ·  "clé" · 3 letters · shape CCV

Frequently Asked Questions

Can "cil" and "clé" be used interchangeably?
No. They are said differently (\sil\ versus \kle\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "cil" vs "clé" - which ranks higher?
"clé" is the more common of the two: it sits at frequency rank #1,987 in our French list, against #33,611 for "cil". 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 "cil" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "clé" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #275,553 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "cil" and "clé" also get mixed up with nearby pairs, the highest-scored neighbour is "cil vs ciro". Nearby pair

Confusion rank #275,553 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