LuisvsluzConfusable pair

Which to use

“Luis” and “luz” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#2,383
“Luis” frequency rank
#604
“luz” frequency rank
2987
confusion score

Side-by-Side Comparison

Feature Luis luz
Definition Luís única radiação captada pelo olho humano

Where the eye mixes Luis and luz

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

4 ch
Luis
3 ch
luz

Visual trap between Luis and luz

A purely visual mix-up. Luis (/'lwjs/.) and luz (/ˈluʃ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 2987, derived from the frequency rank of both members and their visual similarity.

Luis is recorded at frequency rank #2,383, classified as anoun, pronounced /'lwjs/.. luz is at rank #604, tagged as anoun, pronounced /ˈluʃ/.

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 2987, this pair ranks #72,232 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Luis vs luz

Shared letters: lu. Private to "Luis": is. Private to "luz": z.

"Luis" · 4 letters · shape CVVC  ·  "luz" · 3 letters · shape CVC

Known mistypes of this pair

  • Luislius · lluis · luiss · lusi · ulis

Frequently Asked Questions

Do "Luis" and "luz" mean the same thing in a sentence?
No. They are said differently (/'lwjs/. versus /ˈluʃ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Portuguese text, does "Luis" or "luz" show up more?
"luz" is the more common of the two: it sits at frequency rank #604 in our Portuguese list, against #2,383 for "Luis". 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 "Luis" and "luz" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "Luis" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "luz" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #72,232 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "Luis" and "luz" also get mixed up with nearby pairs, the highest-scored neighbour is "ludo vs Luis". 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 #72,232 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