quasi vs qui, What's the Difference?

Which to use

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

#2,332
“quasi” frequency rank: #22
“qui” frequency rank: 2354
confusion score

Side-by-Side Comparison

Feature	quasi	qui
Definition	Morceau de la cuisse d’un bœuf ou d’un veau, placé sous le gîte à la noix.	Lequel, laquelle, lesquels, lesquelles.

Where the spellings diverge

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

5 ch

quasi

3 ch

qui

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: quasi is \ka.zi\ while qui is \ki\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 2354, derived from the frequency rank of both members and their visual similarity.

quasi is recorded at frequency rank #2,332, classified as anoun, pronounced \ka.zi\. qui is at rank #22, tagged as apron, pronounced \ki\.

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 2354, this pair ranks #436,295 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of quasi vs qui

Shared letters: iqu. Private to "quasi": as. Private to "qui": -.

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

Known mistypes of this pair

quasi ← qausi · qquasi · quassi · qusai · uqasi

Frequency comparison

quasi#2,332

qui#22

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "quasi" and "qui" be used interchangeably?

No - they are not even the same part of speech. "quasi" is a noun and "qui" a pronoun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "quasi" or "qui"?

"qui" is the more common of the two: it sits at frequency rank #22 in our French list, against #2,332 for "quasi". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering quasi vs qui

The fastest way to pick the right one every time.

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