alérgicavsalérgicoWhat's the difference?

Which to use

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

#27,849
“alérgica” frequency rank
#32,490
“alérgico” frequency rank
60339
confusion score

Side-by-Side Comparison

Feature alérgica alérgico
Definition Forma del femenino de alérgico. Que pertenece o concierne a la alergia

Where the eye mixes alérgica and alérgico

Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. alérgica and alérgico follow the identical consonant-vowel pattern (VCVCCVCV). Same shape at a glance is often the real trap, independent of shared letters.

8 ch
alérgica
8 ch
alérgico

Why the eye confuses alérgica with alérgico

A purely visual mix-up. alérgica ([aˈleɾxika]) and alérgico ([aˈleɾxiko]) 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 “alérgica” becomes o in “alérgico”. Our composite confusion score for this pair is 60339, derived from the frequency rank of both members and their visual similarity.

alérgica is recorded at frequency rank #27,849, classified as anadj, pronounced [aˈleɾxika]. alérgico is at rank #32,490, tagged as anadj, pronounced [aˈleɾxiko].

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 60339, this pair ranks #59,291 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of alérgica vs alérgico

Shared letters: acgilré. Private to "alérgica": -. Private to "alérgico": o.

"alérgica" · 8 letters · shape VCVCCVCV  ·  "alérgico" · 8 letters · shape VCVCCVCV

Frequently Asked Questions

Is swapping "alérgica" for "alérgico" ever safe?
No. They are said differently ([aˈleɾxika] versus [aˈleɾxiko]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "alérgica" or "alérgico"?
"alérgica" is the more common of the two: it sits at frequency rank #27,849 in our Spanish list, against #32,490 for "alérgico". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "alérgica" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "alérgico" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #59,291 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "alérgica" and "alérgico" also get mixed up with nearby pairs, the highest-scored neighbour is "alérgico vs Américo". Nearby pair

Confusion rank #59,291 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