acertóvsalertWhich spelling fits?

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

Which to use

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

#37,925
“acertó” frequency rank
#40,114
“alert” frequency rank
78039
confusion score

Side-by-Side Comparison

Feature acertó alert
Definition Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del pretérito perfecto simple de indicativo de acertar. Alerta.

Where the eye mixes acertó and alert

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

6 ch
acertó
5 ch
alert

Visual trap between acertó and alert

These two trip readers on the page rather than in the ear: acertó is [aseɾˈt̪o] while alert is /əˈlɜːt/. 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 (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 78039, derived from the frequency rank of both members and their visual similarity.

acertó is recorded at frequency rank #37,925, classified as averb, pronounced [aseɾˈt̪o]. alert is at rank #40,114, tagged as anadj, pronounced /əˈlɜːt/.

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 78039, this pair ranks #15,076 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of acertó vs alert

Shared letters: aert. Private to "acertó": . Private to "alert": l.

"acertó" · 6 letters · shape VCVCCV  ·  "alert" · 5 letters · shape VCVCC

Known mistypes of this pair

  • alertaelrt · alerrt · alertt · allert · alret · laert

Frequently Asked Questions

Can "acertó" and "alert" be used interchangeably?
No - they are not even the same part of speech. "acertó" is a verb and "alert" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "acertó" vs "alert" - which ranks higher?
"acertó" is the more common of the two: it sits at frequency rank #37,925 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.

After this comparison

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

  • Full dictionary entry for "acertó" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "alert" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #15,076 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "acertó" and "alert" 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 #15,076 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