loucovsluxoWhich spelling fits?

Quick tell: louco is a adjective, luxo is a noun, so they fill different roles in a sentence.

Which to use

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

#1,649
“louco” frequency rank
#3,781
“luxo” frequency rank
5430
confusion score

Side-by-Side Comparison

Feature louco luxo
Definition que perdeu a razão, maluco, demente, vesano, amente ostentação de riqueza, esplendor, fausto:

Letter map: louco vs luxo

Shared letters muted; letters that set louco and luxo apart highlighted. Shared run: 3. louco runs 5 letters (CVVCV) against luxo's 4 (CVCV) - the length gap alone is often enough to separate them once you know to check it.

5 ch
louco
4 ch
luxo

Part-of-speech tell for louco / luxo

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: louco is anadjective and luxoanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 5430, derived from the frequency rank of both members and their visual similarity.

louco is recorded at frequency rank #1,649, classified as anadj. luxo is at rank #3,781, tagged as anoun, pronounced /ˈlu.ʃu/.

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 5430, this pair ranks #69,189 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of louco vs luxo

Shared letters: lou. Private to "louco": c. Private to "luxo": x.

"louco" · 5 letters · shape CVVCV  ·  "luxo" · 4 letters · shape CVCV

Known mistypes of this pair

  • loucollouco · locuo · loucco · louoc · luoco · oluco
  • luxolluxo · luox · luxxo · lxuo · ulxo

Frequently Asked Questions

Do "louco" and "luxo" mean the same thing in a sentence?
No - they are not even the same part of speech. "louco" is an adjective and "luxo" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "louco" or "luxo"?
"louco" is the more common of the two: it sits at frequency rank #1,649 in our Portuguese list, against #3,781 for "luxo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "louco" and "luxo".

  • Full dictionary entry for "louco" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "luxo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #69,189 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "louco" and "luxo" also get mixed up with nearby pairs, the highest-scored neighbour is "ludo vs luxo". 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 #69,189 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