Which to use
“alergia” is a noun and “alérgica” is an adjective - they look or sound alike but fill different roles in a sentence.
- #15,267
- “alergia” frequency rank
- #27,849
- “alérgica” frequency rank
- 43116
- confusion score
Side-by-Side Comparison
| Feature | alergia | alérgica |
|---|---|---|
| Definition | Reacción de defensa exagerada del organismo en contra de diversas sustancias extrañas a él (alérgenos) introducidas por inhalación, ingestion, inyección o contacto con la piel, aun en cantidades mínimas, que pueden consistir en medicamentos (como la penicilina), alimentos (como el huevo), polen o algún producto químico. Esta reacción se manifiesta con síntomas respiratorios, cutáneos o nerviosos, y en casos extremos, puede ser mortal. | Forma del femenino de alérgico. |
Where the eye mixes alergia and alérgica
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. alergia runs 7 letters (VCVCCVV) against alérgica's 8 (VCVCCVCV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: alergia vs alérgica
These two trip readers on the page rather than in the ear: alergia is [aˈleɾxja] while alérgica is [aˈleɾxika]. 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 (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 43116, derived from the frequency rank of both members and their visual similarity.
alergia is recorded at frequency rank #15,267, classified as anoun, pronounced [aˈleɾxja]. alérgica is at rank #27,849, tagged as anadj, pronounced [aˈleɾxika].
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 43116, this pair ranks #144,434 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of alergia vs alérgica
Shared letters: agilr. Private to "alergia": e. Private to "alérgica": cé.
"alergia" · 7 letters · shape VCVCCVV · "alérgica" · 8 letters · shape VCVCCVCV
Known mistypes of this pair
- alergia ← aelrgia · alegria · alergai · alerggia · aleriga · alerrgia · allergia · alregia
Frequently Asked Questions
Is swapping "alergia" for "alérgica" ever safe?
Frequency check: "alergia" vs "alérgica" - which ranks higher?
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 "alergia" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "alérgica" - compare definitions side by side with the headword page. Word entry
- This pair ranks #144,434 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "alergia" and "alérgica" also get mixed up with nearby pairs, the highest-scored neighbour is "alergia vs alexia". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #144,434 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.