únicasvsúnicosTell them apart

Which to use

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

#5,685
“únicas” frequency rank
#3,531
“únicos” frequency rank
9216
confusion score

Side-by-Side Comparison

Feature únicas únicos
Definition Forma del femenino plural de único. Forma del masculino plural de único.

Where the eye mixes únicas and únicos

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. únicas and únicos follow the identical consonant-vowel pattern (VCVCVC). Same shape at a glance is often the real trap, independent of shared letters.

6 ch
únicas
6 ch
únicos

Why the eye confuses únicas with únicos

A purely visual mix-up. únicas ([ˈunikas]) 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 a single letter - a in “únicas” becomes o in “únicos”. Our composite confusion score for this pair is 9216, derived from the frequency rank of both members and their visual similarity.

únicas is recorded at frequency rank #5,685, classified as anadj, pronounced [ˈunikas]. 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 9216, this pair ranks #302,606 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of únicas vs únicos

Shared letters: cinsú. Private to "únicas": a. Private to "únicos": o.

"únicas" · 6 letters · shape VCVCVC  ·  "únicos" · 6 letters · shape VCVCVC

Frequently Asked Questions

Do "únicas" and "únicos" mean the same thing in a sentence?
No. They are said differently ([ˈunikas] versus [ˈunikos]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "únicas" vs "únicos" - which ranks higher?
"únicos" is the more common of the two: it sits at frequency rank #3,531 in our Spanish list, against #5,685 for "únicas". 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 "únicas" 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 #302,606 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "únicas" and "únicos" also get mixed up with nearby pairs, the highest-scored neighbour is "Unicode vs únicos". Nearby pair

Confusion rank #302,606 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