Which to use
“IQ” is a noun and “isi” is a verb - they look or sound alike but fill different roles in a sentence.
- #47,975
- “IQ” frequency rank
- #49,170
- “isi” frequency rank
- 97145
- confusion score
Side-by-Side Comparison
| Feature | IQ | isi |
|---|---|---|
| Definition | QI, quotient intellectuel. | Deuxième personne du singulier du futur de l’indicatif du verbe isal/isañ. |
Where the eye mixes IQ and isi
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. IQ runs 2 letters (VC) against isi's 3 (VCV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: IQ vs isi
These two trip readers on the page rather than in the ear: IQ is \iːˈkuː\ while isi is \ˈisːi\. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 97145, derived from the frequency rank of both members and their visual similarity.
IQ is recorded at frequency rank #47,975, classified as anoun, pronounced \iːˈkuː\. isi is at rank #49,170, tagged as averb, pronounced \ˈisːi\.
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 97145, this pair ranks #434 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of IQ vs isi
Shared letters: i. Private to "IQ": q. Private to "isi": s.
"IQ" · 2 letters · shape VC · "isi" · 3 letters · shape VCV
Frequently Asked Questions
Do "IQ" and "isi" mean the same thing in a sentence?
In ordinary French text, does "IQ" or "isi" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "IQ" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "isi" - compare definitions side by side with the headword page. Word entry
- This pair ranks #434 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "IQ" and "isi" also get mixed up with nearby pairs, the highest-scored neighbour is "ime vs isi". Nearby pair
Confusion rank #434 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.