lievsluiWhich spelling fits?

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

Which to use

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

#31,038
“lie” frequency rank
#34,790
“lui” frequency rank
65828
confusion score

Side-by-Side Comparison

Feature lie lui
Definition mentira alugar (tomar de aluguel)

Where the eye mixes lie and lui

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. lie and lui follow the identical consonant-vowel pattern (CVV). Same shape at a glance is often the real trap, independent of shared letters.

3 ch
lie
3 ch
lui

Visual trap between lie and lui

These two trip readers on the page rather than in the ear: lie is /ˈlaɪ/ while lui is /ˈlu.i/.. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 65828, derived from the frequency rank of both members and their visual similarity.

lie is recorded at frequency rank #31,038, classified as anoun, pronounced /ˈlaɪ/. lui is at rank #34,790, tagged as averb, pronounced /ˈlu.i/..

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 65828, this pair ranks #5,229 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of lie vs lui

Shared letters: il. Private to "lie": e. Private to "lui": u.

"lie" · 3 letters · shape CVV  ·  "lui" · 3 letters · shape CVV

Frequently Asked Questions

Is swapping "lie" for "lui" ever safe?
No - they are not even the same part of speech. "lie" is a noun and "lui" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "lie" or "lui" show up more?
"lie" is the more common of the two: it sits at frequency rank #31,038 in our Portuguese list, against #34,790 for "lui". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "lie" 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 #5,229 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "lie" and "lui" also get mixed up with nearby pairs, the highest-scored neighbour is "ludo vs lui". Nearby pair

Confusion rank #5,229 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list