castovscautoTell them apart

Which to use

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

#44,616
“casto” frequency rank
#44,034
“cauto” frequency rank
88650
confusion score

Side-by-Side Comparison

Feature casto cauto
Definition Persona que se abstiene de todo goce sexual o lo vive de acuerdo a ciertas directrices dictadas por su religión o su moral. Que actúa con reserva y sigilo para evitar posibles daños o inconvenientes

Where the eye mixes casto and cauto

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. casto (CVCCV) and cauto (CVVCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

5 ch
casto
5 ch
cauto

Visual trap between casto and cauto

A purely visual mix-up. casto ([ˈkast̪o]) and cauto ([ˈkawt̪o]) 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 a single letter - s in “casto” becomes u in “cauto”. Our composite confusion score for this pair is 88650, derived from the frequency rank of both members and their visual similarity.

casto is recorded at frequency rank #44,616, classified as anadj, pronounced [ˈkast̪o]. cauto is at rank #44,034, tagged as anadj, pronounced [ˈkawt̪o].

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 88650, this pair ranks #3,627 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of casto vs cauto

Shared letters: acot. Private to "casto": s. Private to "cauto": u.

"casto" · 5 letters · shape CVCCV  ·  "cauto" · 5 letters · shape CVVCV

Known mistypes of this pair

  • casto ← acsto · casot · cassto · castto · catso · ccasto · csato
  • cauto ← acuto · catuo · cauot · cautto · ccauto · cuato

Frequently Asked Questions

Is swapping "casto" for "cauto" ever safe?
No. They are said differently ([ˈkast̪o] versus [ˈkawt̪o]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "casto" or "cauto"?
"cauto" is the more common of the two: it sits at frequency rank #44,034 in our Spanish list, against #44,616 for "casto". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "casto" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cauto" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #3,627 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "casto" and "cauto" also get mixed up with nearby pairs, the highest-scored neighbour is "casto vs Chasco". 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 #3,627 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