uh vs und, What's the Difference?

Which to use

“uh” is an intj and “und” is a conjunction - they look or sound alike but fill different roles in a sentence.

#14,258
“uh” frequency rank: #29,551
“und” frequency rank: 43809
confusion score

Side-by-Side Comparison

Feature	uh	und
Definition	expressa que algo não tem aprovação, é desaprovado, é reprovado, está desagradando	(conjunção coordenativa) e.

Letter map: uh vs und

Shared letters muted; letters that set uh and und apart highlighted. Shared run: 1.

2 ch

3 ch

und

Grammar separator: uh vs und

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: uh is anintj and undaconjunction. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 43809, derived from the frequency rank of both members and their visual similarity.

uh is recorded at frequency rank #14,258, classified as anintj. und is at rank #29,551, tagged as aconj, pronounced /ʊnt/.

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 43809, this pair ranks #21,775 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of uh vs und

Shared letters: u. Private to "uh": h. Private to "und": dn.

"uh" · 2 letters · shape VC · "und" · 3 letters · shape VCC

Frequently Asked Questions

Can "uh" and "und" be used interchangeably?

No - they are not even the same part of speech. "uh" is an intj and "und" a conjunction, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "uh" vs "und" - which ranks higher?

"uh" is the more common of the two: it sits at frequency rank #14,258 in our Portuguese list, against #29,551 for "und". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "uh" and "und".

Full dictionary entry for "uh" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "und" - compare definitions side by side with the headword page. Word entry
This pair ranks #21,775 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"uh" and "und" also get mixed up with nearby pairs, the highest-scored neighbour is "ú vs und". Nearby pair

Confusion rank #21,775 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.