um vs use, What's the Difference?

Which to use

“um” is an article and “use” is a noun - they look or sound alike but fill different roles in a sentence.

#12
“um” frequency rank: #2,168
“use” frequency rank: 2180
confusion score

Side-by-Side Comparison

Feature	um	use
Definition	qualquer	uso

Where the eye mixes um and use

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch

3 ch

use

Look-alike desk: um vs use

These two trip readers on the page rather than in the ear: um is /ũw/ while use is (subst) /jus/, (verbo) /juz/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (article vs noun), which is usually the fastest check. Our composite confusion score for this pair is 2180, derived from the frequency rank of both members and their visual similarity.

um is recorded at frequency rank #12, classified as anarticle, pronounced /ũw/. use is at rank #2,168, tagged as anoun, pronounced (subst) /jus/, (verbo) /juz/.

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 2180, this pair ranks #73,297 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of um vs use

Shared letters: u. Private to "um": m. Private to "use": es.

"um" · 2 letters · shape VC · "use" · 3 letters · shape VCV

Frequently Asked Questions

Is swapping "um" for "use" ever safe?

No - they are not even the same part of speech. "um" is an article and "use" a noun, so a sentence built for one is usually ungrammatical with the other.

In ordinary Portuguese text, does "um" or "use" show up more?

"um" is the more common of the two: it sits at frequency rank #12 in our Portuguese list, against #2,168 for "use". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Eye-level mix-up between "um" and "use" is sorted above. Next: full entries or other pairs that share a letter shape.

Full dictionary entry for "um" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "use" - compare definitions side by side with the headword page. Word entry
This pair ranks #73,297 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"um" and "use" also get mixed up with nearby pairs, the highest-scored neighbour is "unser vs use". Nearby pair

Confusion rank #73,297 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.