ú vs und, What's the Difference?

Which to use

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

#44,175
“ú” frequency rank: #29,551
“und” frequency rank: 73726
confusion score

Side-by-Side Comparison

Feature	ú	und
Definition	onde	(conjunção coordenativa) e.

Letter map: ú vs und

Shared letters muted; letters that set ú and und apart highlighted. No shared letter run.

1 ch

3 ch

und

Role in the sentence - ú and und

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ú is anadverb and undaconjunction. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 73726, derived from the frequency rank of both members and their visual similarity.

ú is recorded at frequency rank #44,175, classified as anadv. 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 73726, this pair ranks #2,702 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of ú vs und

Shared letters: none. Private to "ú": ú. Private to "und": dnu.

"ú" · 1 letters · shape V · "und" · 3 letters · shape VCC

Frequently Asked Questions

Do "ú" and "und" mean the same thing in a sentence?

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

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

"und" is the more common of the two: it sits at frequency rank #29,551 in our Portuguese list, against #44,175 for "ú". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

Full dictionary entry for "ú" 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 #2,702 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"ú" and "und" also get mixed up with nearby pairs, the highest-scored neighbour is "ú vs UBS". Nearby pair

Confusion rank #2,702 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.