ilsvsissWhich spelling fits?

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

Which to use

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

#54
“ils” frequency rank
#22,303
“iss” frequency rank
22357
confusion score

Side-by-Side Comparison

Feature ils iss
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. Deuxième personne du singulier de l’impératif présent de essen.

Where the eye mixes ils and iss

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

3 ch
ils
3 ch
iss

Visual trap between ils and iss

These two trip readers on the page rather than in the ear: ils is \il\ while iss is \ɪs\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - l in “ils” becomes s in “iss”, and the parts of speech differ too (pronoun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 22357, derived from the frequency rank of both members and their visual similarity.

ils is recorded at frequency rank #54, classified as apron, pronounced \il\. iss is at rank #22,303, tagged as averb, pronounced \ɪs\.

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 22357, this pair ranks #358,418 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ils vs iss

Shared letters: is. Private to "ils": l. Private to "iss": -.

"ils" · 3 letters · shape VCC  ·  "iss" · 3 letters · shape VCC

Frequently Asked Questions

Can "ils" and "iss" be used interchangeably?
No - they are not even the same part of speech. "ils" is a pronoun and "iss" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "ils" or "iss" show up more?
"ils" is the more common of the two: it sits at frequency rank #54 in our French list, against #22,303 for "iss". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "ils" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "iss" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #358,418 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ils" and "iss" also get mixed up with nearby pairs, the highest-scored neighbour is "isi vs iss". Nearby pair

Confusion rank #358,418 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