asustarvsasustoTell them apart

Which to use

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

#16,268
“asustar” frequency rank
#37,436
“asusto” frequency rank
53704
confusion score

Side-by-Side Comparison

Feature asustar asusto
Definition Dar un susto. Primera persona del singular (yo) del presente de indicativo de asustar o de asustarse.

Where the eye mixes asustar and asusto

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. asustar runs 7 letters (VCVCCVC) against asusto's 6 (VCVCCV) - the length gap alone is often enough to separate them once you know to check it.

7 ch
asustar
6 ch
asusto

Visual trap between asustar and asusto

A purely visual mix-up. asustar ([asusˈt̪aɾ]) and asusto ([aˈsust̪o]) 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 letter(s) in length. Our composite confusion score for this pair is 53704, derived from the frequency rank of both members and their visual similarity.

asustar is recorded at frequency rank #16,268, classified as averb, pronounced [asusˈt̪aɾ]. asusto is at rank #37,436, tagged as averb, pronounced [aˈsust̪o].

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 53704, this pair ranks #86,643 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of asustar vs asusto

Shared letters: astu. Private to "asustar": r. Private to "asusto": o.

"asustar" · 7 letters · shape VCVCCVC  ·  "asusto" · 6 letters · shape VCVCCV

Known mistypes of this pair

  • asustar ← assustar · assutar · asusatr · asusstar · asustarr · asustra · asusttar · asutsar
  • asusto ← assusto · assuto · asusot · asussto · asustto · asutso · aussto · sausto

Frequently Asked Questions

Can "asustar" and "asusto" be used interchangeably?
No. They are said differently ([asusˈt̪aɾ] versus [aˈsust̪o]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "asustar" or "asusto"?
"asustar" is the more common of the two: it sits at frequency rank #16,268 in our Spanish list, against #37,436 for "asusto". 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 "asustar" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "asusto" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #86,643 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "asustar" and "asusto" also get mixed up with nearby pairs, the highest-scored neighbour is "asusto vs ayuso". 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 #86,643 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