cuestionarvscuestionarioTell them apart

Quick tell: cuestionar is a verb, cuestionario is a noun, so they fill different roles in a sentence.

Which to use

“cuestionar” is a verb and “cuestionario” is a noun - they look or sound alike but fill different roles in a sentence.

#10,476
“cuestionar” frequency rank
#14,325
“cuestionario” frequency rank
24801
confusion score

Side-by-Side Comparison

Feature cuestionar cuestionario
Definition Poner en duda algo, especialmente una idea, una creencia o la declaración de alguien. Conjunto de preguntas planteadas con un fin determinado

Where the eye mixes cuestionar and cuestionario

Muted = shared; highlighted = the visual trap. They share 10 letters in sequence.

10 ch
cuestionar
12 ch
cuestionario

Why the eye confuses cuestionar with cuestionario

These two trip readers on the page rather than in the ear: cuestionar is [kwest̪joˈnaɾ] while cuestionario is [kwest̪joˈnaɾjo]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “cuestionar” sits inside “cuestionario”, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 24801, derived from the frequency rank of both members and their visual similarity.

cuestionar is recorded at frequency rank #10,476, classified as averb, pronounced [kwest̪joˈnaɾ]. cuestionario is at rank #14,325, tagged as anoun, pronounced [kwest̪joˈnaɾjo].

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 24801, this pair ranks #239,416 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cuestionar vs cuestionario

Shared letters: aceinorstu. Private to "cuestionar": -. Private to "cuestionario": -.

"cuestionar" · 10 letters · shape CVVCCVVCVC  ·  "cuestionario" · 12 letters · shape CVVCCVVCVCVV

Known mistypes of this pair

  • cuestionarccuestionar · ceustionar · cuesitonar · cuesstionar · cuestinoar · cuestioanr · cuestionarr · cuestionnar
  • cuestionarioccuestionario · ceustionario · cuesitonario · cuesstionario · cuestinoario · cuestioanrio · cuestionairo · cuestionaroi

Frequently Asked Questions

Is swapping "cuestionar" for "cuestionario" ever safe?
No - they are not even the same part of speech. "cuestionar" is a verb and "cuestionario" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "cuestionar" or "cuestionario"?
"cuestionar" is the more common of the two: it sits at frequency rank #10,476 in our Spanish list, against #14,325 for "cuestionario". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "cuestionar" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cuestionario" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #239,416 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "cuestionar" and "cuestionario" also get mixed up with nearby pairs, the highest-scored neighbour is "cuestionario vs cuestionaron". 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 #239,416 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