loucovslutoTell them apart

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

Which to use

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

#1,649
“louco” frequency rank
#5,112
“luto” frequency rank
6761
confusion score

Side-by-Side Comparison

Feature louco luto
Definition que perdeu a razão, maluco, demente, vesano, amente dor causada pela morte de alguém ou por grande calamidade

Letter map: louco vs luto

Shared letters muted; letters that set louco and luto apart highlighted. Shared run: 3.

5 ch
louco
4 ch
luto

Part-of-speech tell for louco / luto

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: louco is anadjective and lutoanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 6761, derived from the frequency rank of both members and their visual similarity.

louco is recorded at frequency rank #1,649, classified as anadj. luto is at rank #5,112, tagged as anoun, pronounced /ˈlu.tu/.

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 6761, this pair ranks #67,589 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of louco vs luto

Shared letters: lou. Private to "louco": c. Private to "luto": t.

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

Known mistypes of this pair

  • loucollouco · locuo · loucco · louoc · luoco · oluco
  • lutolluto · ltuo · luot · lutto · ulto

Frequently Asked Questions

Do "louco" and "luto" mean the same thing in a sentence?
No - they are not even the same part of speech. "louco" is an adjective and "luto" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "louco" or "luto"?
"louco" is the more common of the two: it sits at frequency rank #1,649 in our Portuguese list, against #5,112 for "luto". 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 "luto".

  • Full dictionary entry for "louco" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "luto" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #67,589 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "louco" and "luto" also get mixed up with nearby pairs, the highest-scored neighbour is "ludo vs luto". 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 #67,589 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