alergiavsalergiasTell them apart

Which to use

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

#15,267
“alergia” frequency rank
#27,843
“alergias” frequency rank
43110
confusion score

Side-by-Side Comparison

Feature alergia alergias
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 plural de alergia

Where the eye mixes alergia and alergias

Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. alergia runs 7 letters (VCVCCVV) against alergias's 8 (VCVCCVVC) - the length gap alone is often enough to separate them once you know to check it.

7 ch
alergia
8 ch
alergias

Visual trap between alergia and alergias

A purely visual mix-up. alergia ([aˈleɾxja]) and alergias ([aˈleɾxjas]) 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) - “alergia” sits inside “alergias”. Our composite confusion score for this pair is 43110, 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]. alergias is at rank #27,843, tagged as anoun, pronounced [aˈleɾxjas].

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 43110, this pair ranks #144,472 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of alergia vs alergias

Shared letters: aegilr. Private to "alergia": -. Private to "alergias": s.

"alergia" · 7 letters · shape VCVCCVV  ·  "alergias" · 8 letters · shape VCVCCVVC

Known mistypes of this pair

  • alergia ← aelrgia · alegria · alergai · alerggia · aleriga · alerrgia · allergia · alregia
  • alergias ← aelrgias · alegrias · alergais · alerggias · alergiass · alergisa · alerigas · alerrgias

Frequently Asked Questions

Do "alergia" and "alergias" mean the same thing in a sentence?
No. They are said differently ([aˈleɾxja] versus [aˈleɾxjas]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "alergia" vs "alergias" - which ranks higher?
"alergia" is the more common of the two: it sits at frequency rank #15,267 in our Spanish list, against #27,843 for "alergias". 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 "alergia" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "alergias" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #144,472 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "alergia" and "alergias" 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 #144,472 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