louvsluiWhich spelling fits?

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

Which to use

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

#7,204
“lou” frequency rank
#68
“lui” frequency rank
7272
confusion score

Side-by-Side Comparison

Feature lou lui
Definition Loup. Pronom clitique de la troisième personne du singulier épicène du complément d’objet indirect.

Where the eye mixes lou and lui

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

3 ch
lou
3 ch
lui

Look-alike desk: lou vs lui

These two trip readers on the page rather than in the ear: lou is \lu\ while lui is \lɥi\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 7272, derived from the frequency rank of both members and their visual similarity.

lou is recorded at frequency rank #7,204, classified as anoun, pronounced \lu\. lui is at rank #68, tagged as apron, pronounced \lɥi\.

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 7272, this pair ranks #423,651 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of lou vs lui

Shared letters: lu. Private to "lou": o. Private to "lui": i.

"lou" · 3 letters · shape CVV  ·  "lui" · 3 letters · shape CVV

Frequently Asked Questions

Can "lou" and "lui" be used interchangeably?
No - they are not even the same part of speech. "lou" is a noun and "lui" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "lou" vs "lui" - which ranks higher?
"lui" is the more common of the two: it sits at frequency rank #68 in our French list, against #7,204 for "lou". 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 "lou" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "lui" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #423,651 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "lou" and "lui" also get mixed up with nearby pairs, the highest-scored neighbour is "lobo vs lou". Nearby pair

Confusion rank #423,651 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