bas vs bis, What's the Difference?

Which to use

“bas” is an adjective and “bis” is a preposition - they look or sound alike but fill different roles in a sentence.

#35,453
“bas” frequency rank: #14,300
“bis” frequency rank: 49753
confusion score

Side-by-Side Comparison

Feature	bas	bis
Definition	baixo:	até

Letter map: bas vs bis

Shared letters muted; letters that set bas and bis apart highlighted. Shared run: 2.

3 ch

bas

3 ch

bis

Grammar separator: bas vs bis

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bas is anadjective and bisapreposition. On the page they differ by a single letter - a in “bas” becomes i in “bis”. Our composite confusion score for this pair is 49753, derived from the frequency rank of both members and their visual similarity.

bas is recorded at frequency rank #35,453, classified as anadj, pronounced /bɑ/. bis is at rank #14,300, tagged as aprep.

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 49753, this pair ranks #15,233 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of bas vs bis

Shared letters: bs. Private to "bas": a. Private to "bis": i.

"bas" · 3 letters · shape CVC · "bis" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "bas" for "bis" ever safe?

No - they are not even the same part of speech. "bas" is an adjective and "bis" a preposition, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "bas" vs "bis" - which ranks higher?

"bis" is the more common of the two: it sits at frequency rank #14,300 in our Portuguese list, against #35,453 for "bas". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pair "bas" vs "bis" is on the table, pick a follow-up below.

Full dictionary entry for "bas" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "bis" - compare definitions side by side with the headword page. Word entry
This pair ranks #15,233 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"bas" and "bis" also get mixed up with nearby pairs, the highest-scored neighbour is "bas vs bué". Nearby pair

Confusion rank #15,233 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.