alertavsalertanWhat's the difference?

Quick tell: alerta is a adjective, alertan is a verb, so they fill different roles in a sentence.

Which to use

“alerta” is an adjective and “alertan” is a verb - they look or sound alike but fill different roles in a sentence.

#3,378
“alerta” frequency rank
#45,722
“alertan” frequency rank
49100
confusion score

Side-by-Side Comparison

Feature alerta alertan
Definition Adjetivo invariante en género que denota estado de atención o vigilancia. Tercera persona del plural (ellos, ellas; ustedes, 2.ª persona) del presente de indicativo de alertar.

Where the eye mixes alerta and alertan

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. alerta runs 6 letters (VCVCCV) against alertan's 7 (VCVCCVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
alerta
7 ch
alertan

Visual trap between alerta and alertan

These two trip readers on the page rather than in the ear: alerta is [aˈleɾt̪a] while alertan is [aˈleɾt̪ãn]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “alerta” sits inside “alertan”, and the parts of speech differ too (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 49100, derived from the frequency rank of both members and their visual similarity.

alerta is recorded at frequency rank #3,378, classified as anadj, pronounced [aˈleɾt̪a]. alertan is at rank #45,722, tagged as averb, pronounced [aˈleɾt̪ãn].

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 49100, this pair ranks #110,726 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of alerta vs alertan

Shared letters: aelrt. Private to "alerta": -. Private to "alertan": n.

"alerta" · 6 letters · shape VCVCCV  ·  "alertan" · 7 letters · shape VCVCCVC

Known mistypes of this pair

  • alerta ← aelrta · alerat · alerrta · alertta · aletra · allerta · alreta · laerta
  • alertan ← aelrtan · aleratn · alerrtan · alertann · alertna · alerttan · allertan · alretan

Frequently Asked Questions

Can "alerta" and "alertan" be used interchangeably?
No - they are not even the same part of speech. "alerta" is an adjective and "alertan" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "alerta" or "alertan" show up more?
"alerta" is the more common of the two: it sits at frequency rank #3,378 in our Spanish list, against #45,722 for "alertan". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Eye-level mix-up between "alerta" and "alertan" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "alerta" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "alertan" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #110,726 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "alerta" and "alertan" also get mixed up with nearby pairs, the highest-scored neighbour is "alertan vs apartan". 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 #110,726 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