acertarvsafectarTell them apart

Which to use

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

#25,108
“acertar” frequency rank
#5,912
“afectar” frequency rank
31020
confusion score

Side-by-Side Comparison

Feature acertar afectar
Definition Dar en el lugar, sitio o punto propuesto o previsto. Producir un efecto, cambio o alteración en algo o en alguien. Modificar, influir, alterar o mudar su forma o comportamiento.

Where the eye mixes acertar and afectar

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

7 ch
acertar
7 ch
afectar

Look-alike desk: acertar vs afectar

A purely visual mix-up. acertar ([aseɾˈt̪aɾ]) and afectar ([afekˈt̪aɾ]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 31020, derived from the frequency rank of both members and their visual similarity.

acertar is recorded at frequency rank #25,108, classified as averb, pronounced [aseɾˈt̪aɾ]. afectar is at rank #5,912, tagged as averb, pronounced [afekˈt̪aɾ].

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 31020, this pair ranks #209,199 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of acertar vs afectar

Shared letters: acert. Private to "acertar": -. Private to "afectar": f.

"acertar" · 7 letters · shape VCVCCVC  ·  "afectar" · 7 letters · shape VCVCCVC

Known mistypes of this pair

  • acertaraccertar · aceratr · acerrtar · acertarr · acertra · acerttar · acetrar · acretar
  • afectaraefctar · afcetar · afecatr · afecctar · afectarr · afectra · afecttar · afetcar

Frequently Asked Questions

Can "acertar" and "afectar" be used interchangeably?
No. They are said differently ([aseɾˈt̪aɾ] versus [afekˈt̪aɾ]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "acertar" vs "afectar" - which ranks higher?
"afectar" is the more common of the two: it sits at frequency rank #5,912 in our Spanish list, against #25,108 for "acertar". 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 "acertar" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "afectar" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #209,199 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "acertar" and "afectar" also get mixed up with nearby pairs, the highest-scored neighbour is "acercará vs acertar". 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 #209,199 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