QIvsquiTell them apart

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

Which to use

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

#10,565
“QI” frequency rank
#22
“qui” frequency rank
10587
confusion score

Side-by-Side Comparison

Feature QI qui
Definition Abréviation de quotient intellectuel. Lequel, laquelle, lesquels, lesquelles.

Where the eye mixes QI and qui

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

2 ch
QI
3 ch
qui

Why the eye confuses QI with qui

These two trip readers on the page rather than in the ear: QI is \ky i\ while qui is \ki\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 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 10587, derived from the frequency rank of both members and their visual similarity.

QI is recorded at frequency rank #10,565, classified as anoun, pronounced \ky i\. 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 10587, this pair ranks #412,399 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of QI vs qui

Shared letters: iq. Private to "QI": -. Private to "qui": u.

"QI" · 2 letters · shape CV  ·  "qui" · 3 letters · shape CVV

Frequently Asked Questions

Is swapping "QI" for "qui" ever safe?
No - they are not even the same part of speech. "QI" is a noun and "qui" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "QI" vs "qui" - which ranks higher?
"qui" is the more common of the two: it sits at frequency rank #22 in our French list, against #10,565 for "QI". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "QI" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "qui" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #412,399 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "QI" and "qui" also get mixed up with nearby pairs, the highest-scored neighbour is "Q1 vs QI". Nearby pair

Confusion rank #412,399 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list