quivsquisWhat's the difference?

Quick tell: qui is a pronoun, quis is a verb, so they fill different roles in a sentence.

Which to use

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

#9,094
“qui” frequency rank
#1,256
“quis” frequency rank
10350
confusion score

Side-by-Side Comparison

Feature qui quis
Definition que relativo; o qual, a qual, os quais, as quais primeira pessoa do singular do pretérito perfeito do indicativo do verbo querer

Where the spellings diverge

Shared letters are muted; the letters that actually set qui and quis apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.

3 ch
qui
4 ch
quis

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: qui is /Ki/ while quis is /ˈkis/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “qui” sits inside “quis”, and the parts of speech differ too (pronoun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 10350, derived from the frequency rank of both members and their visual similarity.

qui is recorded at frequency rank #9,094, classified as apron, pronounced /Ki/. quis is at rank #1,256, tagged as averb, pronounced /ˈkis/.

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 10350, this pair ranks #62,786 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of qui vs quis

Shared letters: iqu. Private to "qui": -. Private to "quis": s.

"qui" · 3 letters · shape CVV  ·  "quis" · 4 letters · shape CVVC

Known mistypes of this pair

  • quisqius · qquis · quiss · qusi · uqis

Frequency comparison

qui#9,094
quis#1,256

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "qui" and "quis" be used interchangeably?
No - they are not even the same part of speech. "qui" is a pronoun and "quis" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "qui" or "quis"?
"quis" is the more common of the two: it sits at frequency rank #1,256 in our Portuguese list, against #9,094 for "qui". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering qui vs quis

The fastest way to pick the right one every time.

  • Check the role first: if you need a pronoun, it's “qui”; for a verb, it's “quis”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “qui” entry
  • Browse more pairs most likely to be confused. Most confusable

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list