Which to use
“louco” is an adjective and “lousa” is a noun - they look or sound alike but fill different roles in a sentence.
- #1,649
- “louco” frequency rank
- #32,242
- “lousa” frequency rank
- 33891
- confusion score
Side-by-Side Comparison
| Feature | louco | lousa |
|---|---|---|
| Definition | que perdeu a razão, maluco, demente, vesano, amente | quadro-negro |
Letter map: louco vs lousa
Shared letters muted; letters that set louco and lousa apart highlighted. Shared run: 3.
Grammar separator: louco vs lousa
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: louco is anadjective and lousaanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 33891, derived from the frequency rank of both members and their visual similarity.
louco is recorded at frequency rank #1,649, classified as anadj. lousa is at rank #32,242, tagged as anoun, pronounced /ˈlow.zɐ/.
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 33891, this pair ranks #33,506 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of louco vs lousa
Shared letters: lou. Private to "louco": c. Private to "lousa": as.
"louco" · 5 letters · shape CVVCV · "lousa" · 5 letters · shape CVVCV
Known mistypes of this pair
Frequently Asked Questions
Can "louco" and "lousa" be used interchangeably?
In ordinary Portuguese text, does "louco" or "lousa" show up more?
What to do next
You've compared "louco" and "lousa". Here's where to go from here.
- Full dictionary entry for "louco" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "lousa" - compare definitions side by side with the headword page. Word entry
- This pair ranks #33,506 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "louco" and "lousa" also get mixed up with nearby pairs, the highest-scored neighbour is "loiça vs lousa". 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 #33,506 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.