ilsvsislesWhich spelling fits?

Quick tell: ils is a pronoun, isles is a noun, so they fill different roles in a sentence.

Which to use

“ils” is a pronoun and “isles” is a noun - they look or sound alike but fill different roles in a sentence.

#54
“ils” frequency rank
#36,912
“isles” frequency rank
36966
confusion score

Side-by-Side Comparison

Feature ils isles
Definition Pronom clitique de la troisième personne du pluriel sujet, quand on parle d’un groupe d’hommes et de femmes ou de choses grammaticalement masculines et féminines. Pluriel de isle.

Same sound, different letters: ils vs isles

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 3 letters.

3 ch
ils
5 ch
isles

Same sound, different spelling - ils / isles

Say them out loud and nothing separates them: ils and isles carry the same recorded pronunciation, \il\. Grammar is what tells them apart: one is apronoun, the other anoun, so most sentences will only accept one of them. They differ by 2 letter(s) in length. Our composite confusion score for this pair is 36966, derived from the frequency rank of both members and their visual similarity.

ils is recorded at frequency rank #54, classified as apron, pronounced \il\. isles is at rank #36,912, tagged as anoun, pronounced \il\.

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 36966, this pair ranks #265,834 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ils vs isles

Shared letters: ils. Private to "ils": -. Private to "isles": e.

"ils" · 3 letters · shape VCC  ·  "isles" · 5 letters · shape VCCVC

Known mistypes of this pair

  • islesilses · isels · isless · islles · islse · issles · siles

Frequently Asked Questions

Can "ils" and "isles" be used interchangeably?
No - they are not even the same part of speech. "ils" is a pronoun and "isles" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "ils" vs "isles" - which ranks higher?
"ils" is the more common of the two: it sits at frequency rank #54 in our French list, against #36,912 for "isles". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Sound matches; spelling doesn't. Use the exits below to lock the right form or check a cousin pair.

  • Full dictionary entry for "ils" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "isles" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #265,834 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ils" and "isles" also get mixed up with nearby pairs, the highest-scored neighbour is "isles vs ives". 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 #265,834 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