únicovsúnicosWhat's the difference?

Which to use

“único” and “únicos” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#368
“único” frequency rank
#3,531
“únicos” frequency rank
3899
confusion score

Side-by-Side Comparison

Feature único únicos
Definition Dícese de lo que hay uno y solo un ejemplar. Forma del masculino plural de único.

Where the eye mixes único and únicos

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. único runs 5 letters (VCVCV) against únicos's 6 (VCVCVC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
único
6 ch
únicos

Why the eye confuses único with únicos

A purely visual mix-up. único ([ˈuniko]) and únicos ([ˈunikos]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 extra letter(s) - “único” sits inside “únicos”. Our composite confusion score for this pair is 3899, derived from the frequency rank of both members and their visual similarity.

único is recorded at frequency rank #368, classified as anadj, pronounced [ˈuniko]. únicos is at rank #3,531, tagged as anadj, pronounced [ˈunikos].

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 3899, this pair ranks #317,324 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of único vs únicos

Shared letters: cinoú. Private to "único": -. Private to "únicos": s.

"único" · 5 letters · shape VCVCV  ·  "únicos" · 6 letters · shape VCVCVC

Frequently Asked Questions

Is swapping "único" for "únicos" ever safe?
No. They are said differently ([ˈuniko] versus [ˈunikos]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "único" vs "únicos" - which ranks higher?
"único" is the more common of the two: it sits at frequency rank #368 in our Spanish list, against #3,531 for "únicos". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "único" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "únicos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #317,324 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "único" and "únicos" also get mixed up with nearby pairs, the highest-scored neighbour is "Unicode vs únicos". Nearby pair

Confusion rank #317,324 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list