laisvslusConfusable pair

Quick tell: lais is a noun, lus is an adjective, so they fill different roles in a sentence.

Which to use

“lais” is a noun and “lus” is an adjective - they look or sound alike but fill different roles in a sentence.

#41,862
“lais” frequency rank
#12,613
“lus” frequency rank
54475
confusion score

Side-by-Side Comparison

Feature lais lus
Definition Jeune baliveau de l’âge du bois, qu’on laisse quand on coupe le taillis, afin qu’il vienne en haute futaie. Masculin pluriel de lu.

Where the eye mixes lais and lus

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

4 ch
lais
3 ch
lus

Visual trap between lais and lus

These two trip readers on the page rather than in the ear: lais is \lɛ\ while lus is \ly\. 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 (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 54475, derived from the frequency rank of both members and their visual similarity.

lais is recorded at frequency rank #41,862, classified as anoun, pronounced \lɛ\. lus is at rank #12,613, tagged as anadj, pronounced \ly\.

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 54475, this pair ranks #133,784 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of lais vs lus

Shared letters: ls. Private to "lais": ai. Private to "lus": u.

"lais" · 4 letters · shape CVVC  ·  "lus" · 3 letters · shape CVC

Known mistypes of this pair

  • laisalis · laiss · lasi · llais

Frequently Asked Questions

Is swapping "lais" for "lus" ever safe?
No - they are not even the same part of speech. "lais" is a noun and "lus" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "lais" or "lus"?
"lus" is the more common of the two: it sits at frequency rank #12,613 in our French list, against #41,862 for "lais". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "lais" and "lus" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "lais" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "lus" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #133,784 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "lais" and "lus" also get mixed up with nearby pairs, the highest-scored neighbour is "lago vs lais". 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 #133,784 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