quivsquizáWhat's the difference?

Quick tell: qui is a pronoun, quizá is an adverb, so they fill different roles in a sentence.

Which to use

“qui” is a pronoun and “quizá” is an adverb - they look or sound alike but fill different roles in a sentence.

#12,907
“qui” frequency rank
#1,422
“quizá” frequency rank
14329
confusion score

Side-by-Side Comparison

Feature qui quizá
Definition Quién. Expresa la creencia en que algo puede ocurrir o que sea cierto, pero no se está seguro de ello.

Where the eye mixes qui and quizá

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. qui runs 3 letters (CVV) against quizá's 5 (CVVCV) - the length gap alone is often enough to separate them once you know to check it.

3 ch
qui
5 ch
quizá

Look-alike desk: qui vs quizá

These two trip readers on the page rather than in the ear: qui is [ˈki] while quizá is [kiˈsa]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “qui” sits inside “quizá”, and the parts of speech differ too (pronoun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 14329, derived from the frequency rank of both members and their visual similarity.

qui is recorded at frequency rank #12,907, classified as apron, pronounced [ˈki]. quizá is at rank #1,422, tagged as anadv, pronounced [kiˈsa].

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 14329, this pair ranks #284,529 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of qui vs quizá

Shared letters: iqu. Private to "qui": -. Private to "quizá": zá.

"qui" · 3 letters · shape CVV  ·  "quizá" · 5 letters · shape CVVCV

Frequently Asked Questions

Can "qui" and "quizá" be used interchangeably?
No - they are not even the same part of speech. "qui" is a pronoun and "quizá" an adverb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "qui" or "quizá" show up more?
"quizá" is the more common of the two: it sits at frequency rank #1,422 in our Spanish list, against #12,907 for "qui". 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 "qui" and "quizá" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "qui" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "quizá" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #284,529 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "qui" and "quizá" also get mixed up with nearby pairs, the highest-scored neighbour is "Qom vs qui". Nearby pair

Confusion rank #284,529 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