únicovsunirWhat's the difference?

Quick tell: único is a adjective, unir is a verb, so they fill different roles in a sentence.

Which to use

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

#515
“único” frequency rank
#4,962
“unir” frequency rank
5477
confusion score

Side-by-Side Comparison

Feature único unir
Definition singular juntar

Where the spellings diverge

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

5 ch
único
4 ch
unir

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: único is /ˈu.ni.ku/ while unir is /ˈu.niɾ/. 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 (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 5477, derived from the frequency rank of both members and their visual similarity.

único is recorded at frequency rank #515, classified as anadj, pronounced /ˈu.ni.ku/. unir is at rank #4,962, tagged as averb, pronounced /ˈu.niɾ/.

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 5477, this pair ranks #69,134 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of único vs unir

Shared letters: in. Private to "único": coú. Private to "unir": ru.

"único" · 5 letters · shape VCVCV  ·  "unir" · 4 letters · shape VCVC

Known mistypes of this pair

  • unirnuir · uinr · unirr · unnir · unri

Frequency comparison

único#515
unir#4,962

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "único" and "unir" be used interchangeably?
No - they are not even the same part of speech. "único" is an adjective and "unir" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "único" or "unir"?
"único" is the more common of the two: it sits at frequency rank #515 in our Portuguese list, against #4,962 for "unir". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering único vs unir

The fastest way to pick the right one every time.

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

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

Source: FrequencyWords open word-frequency list