unir vs uno, What's the Difference?

Which to use

“unir” is a verb and “uno” is an adjective - they look or sound alike but fill different roles in a sentence.

#4,962
“unir” frequency rank: #11,761
“uno” frequency rank: 16723
confusion score

Side-by-Side Comparison

Feature	unir	uno
Definition	juntar	único

Where the spellings diverge

Shared letters are muted; the letters that actually set unir and uno apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

4 ch

unir

3 ch

uno

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: unir is /ˈu.niɾ/ while uno is /ˈunu/. 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 (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 16723, derived from the frequency rank of both members and their visual similarity.

unir is recorded at frequency rank #4,962, classified as averb, pronounced /ˈu.niɾ/. uno is at rank #11,761, tagged as anadj, pronounced /ˈunu/.

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 16723, this pair ranks #54,740 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of unir vs uno

Shared letters: nu. Private to "unir": ir. Private to "uno": o.

"unir" · 4 letters · shape VCVC · "uno" · 3 letters · shape VCV

Known mistypes of this pair

unir ← nuir · uinr · unirr · unnir · unri

Frequency comparison

unir#4,962

uno#11,761

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "unir" and "uno" be used interchangeably?

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

Which is more common, "unir" or "uno"?

"unir" is the more common of the two: it sits at frequency rank #4,962 in our Portuguese list, against #11,761 for "uno". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering unir vs uno

The fastest way to pick the right one every time.

Check the role first: if you need a verb, it's “unir”; for an adjective, it's “uno”.
See each word in full, definition, IPA, etymology and its other confusables. Full “unir” entry
Browse more pairs most likely to be confused. Most confusable