alertvsalertarWhich spelling fits?

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

Which to use

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

#40,114
“alert” frequency rank
#28,229
“alertar” frequency rank
68343
confusion score

Side-by-Side Comparison

Feature alert alertar
Definition Alerta. Dar la alerta. Avisar.

Where the eye mixes alert and alertar

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

5 ch
alert
7 ch
alertar

Why the eye confuses alert with alertar

These two trip readers on the page rather than in the ear: alert is /əˈlɜːt/ while alertar is [aleɾˈt̪aɾ]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “alert” sits inside “alertar”, and the parts of speech differ too (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 68343, derived from the frequency rank of both members and their visual similarity.

alert is recorded at frequency rank #40,114, classified as anadj, pronounced /əˈlɜːt/. alertar is at rank #28,229, tagged as averb, pronounced [aleɾˈt̪aɾ].

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 68343, this pair ranks #34,746 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of alert vs alertar

Shared letters: aelrt. Private to "alert": -. Private to "alertar": -.

"alert" · 5 letters · shape VCVCC  ·  "alertar" · 7 letters · shape VCVCCVC

Known mistypes of this pair

  • alertaelrt · alerrt · alertt · allert · alret · laert
  • alertaraelrtar · aleratr · alerrtar · alertarr · alertra · alerttar · allertar · alretar

Frequently Asked Questions

Is swapping "alert" for "alertar" ever safe?
No - they are not even the same part of speech. "alert" is an adjective and "alertar" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "alert" or "alertar"?
"alertar" is the more common of the two: it sits at frequency rank #28,229 in our Spanish list, against #40,114 for "alert". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "alert" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "alertar" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #34,746 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "alert" and "alertar" also get mixed up with nearby pairs, the highest-scored neighbour is "alert vs azerí". 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 #34,746 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