Which to use
“lousa” and “lupa” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #32,242
- “lousa” frequency rank
- #30,241
- “lupa” frequency rank
- 62483
- confusion score
Side-by-Side Comparison
| Feature | lousa | lupa |
|---|---|---|
| Definition | quadro-negro | lente convergente que aumenta o diâmetro aparente dos objetos |
Where the eye mixes lousa and lupa
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. lousa runs 5 letters (CVVCV) against lupa's 4 (CVCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses lousa with lupa
A purely visual mix-up. lousa (/ˈlow.zɐ/) and lupa (/ˈlu.pɐ/) 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 62483, derived from the frequency rank of both members and their visual similarity.
lousa is recorded at frequency rank #32,242, classified as anoun, pronounced /ˈlow.zɐ/. lupa is at rank #30,241, tagged as anoun, pronounced /ˈlu.pɐ/.
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 62483, this pair ranks #6,636 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of lousa vs lupa
Shared letters: alu. Private to "lousa": os. Private to "lupa": p.
"lousa" · 5 letters · shape CVVCV · "lupa" · 4 letters · shape CVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "lousa" for "lupa" ever safe?
Frequency check: "lousa" vs "lupa" - which ranks higher?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "lousa" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "lupa" - compare definitions side by side with the headword page. Word entry
- This pair ranks #6,636 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "lousa" and "lupa" also get mixed up with nearby pairs, the highest-scored neighbour is "laca vs lupa". 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 #6,636 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.