Which to use
“bis” is a preposition and “blu” is an adjective - they look or sound alike but fill different roles in a sentence.
- #14,300
- “bis” frequency rank
- #15,516
- “blu” frequency rank
- 29816
- confusion score
Side-by-Side Comparison
| Feature | bis | blu |
|---|---|---|
| Definition | até | azul |
Letter map: bis vs blu
Shared letters muted; letters that set bis and blu apart highlighted. Shared run: 1.
Part-of-speech tell for bis / blu
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bis is apreposition and bluanadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 29816, derived from the frequency rank of both members and their visual similarity.
bis is recorded at frequency rank #14,300, classified as aprep. blu is at rank #15,516, tagged as anadj, pronounced /blu/ ouvir^(fonte ?).
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 29816, this pair ranks #38,753 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of bis vs blu
Shared letters: b. Private to "bis": is. Private to "blu": lu.
"bis" · 3 letters · shape CVC · "blu" · 3 letters · shape CCV
Frequently Asked Questions
Is swapping "bis" for "blu" ever safe?
Frequency check: "bis" vs "blu" - which ranks higher?
Useful next steps
You've compared "bis" and "blu". Here's where to go from here.
- Full dictionary entry for "bis" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "blu" - compare definitions side by side with the headword page. Word entry
- This pair ranks #38,753 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "bis" and "blu" also get mixed up with nearby pairs, the highest-scored neighbour is "bile vs blu". Nearby pair
Confusion rank #38,753 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.