labovslaiTell them apart

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

Which to use

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

#12,609
“labo” frequency rank
#19,335
“lai” frequency rank
31944
confusion score

Side-by-Side Comparison

Feature labo lai
Definition Laboratoire. Laïc, convers.

Where the eye mixes labo and lai

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

4 ch
labo
3 ch
lai

Visual trap between labo and lai

These two trip readers on the page rather than in the ear: labo is \la.bo\ while lai is \lɛ\. 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 31944, derived from the frequency rank of both members and their visual similarity.

labo is recorded at frequency rank #12,609, classified as anoun, pronounced \la.bo\. lai is at rank #19,335, tagged as anadj, pronounced \lɛ\.

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 31944, this pair ranks #300,581 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of labo vs lai

Shared letters: al. Private to "labo": bo. Private to "lai": i.

"labo" · 4 letters · shape CVCV  ·  "lai" · 3 letters · shape CVV

Known mistypes of this pair

  • laboalbo · labbo · laob · lbao · llabo

Frequently Asked Questions

Can "labo" and "lai" be used interchangeably?
No - they are not even the same part of speech. "labo" is a noun and "lai" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "labo" or "lai" show up more?
"labo" is the more common of the two: it sits at frequency rank #12,609 in our French list, against #19,335 for "lai". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "labo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "lai" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #300,581 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "labo" and "lai" also get mixed up with nearby pairs, the highest-scored neighbour is "lai vs lep". 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 #300,581 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