umavsundTell them apart

Quick tell: uma is a article, und is a conjunction, so they fill different roles in a sentence.

Which to use

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

#13
“uma” frequency rank
#29,551
“und” frequency rank
29564
confusion score

Side-by-Side Comparison

Feature uma und
Definition feminino de um (conjunção coordenativa) e.

Where the eye mixes uma and und

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

3 ch
uma
3 ch
und

Why the eye confuses uma with und

These two trip readers on the page rather than in the ear: uma is /ˈu.mɐ/ while und is /ʊnt/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (article vs conjunction), which is usually the fastest check. Our composite confusion score for this pair is 29564, derived from the frequency rank of both members and their visual similarity.

uma is recorded at frequency rank #13, classified as anarticle, pronounced /ˈu.mɐ/. 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 29564, this pair ranks #39,020 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of uma vs und

Shared letters: u. Private to "uma": am. Private to "und": dn.

"uma" · 3 letters · shape VCV  ·  "und" · 3 letters · shape VCC

Frequently Asked Questions

Is swapping "uma" for "und" ever safe?
No - they are not even the same part of speech. "uma" is an article and "und" a conjunction, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "uma" vs "und" - which ranks higher?
"uma" is the more common of the two: it sits at frequency rank #13 in our Portuguese list, against #29,551 for "und". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "uma" 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 #39,020 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "uma" and "und" also get mixed up with nearby pairs, the highest-scored neighbour is "ú vs und". Nearby pair

Confusion rank #39,020 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list