IIevsIQWhich spelling fits?

Quick tell: IIe is a adjective, IQ is a noun, so they fill different roles in a sentence.

Which to use

“IIe” is an adjective and “IQ” is a noun - they look or sound alike but fill different roles in a sentence.

#25,004
“IIe” frequency rank
#47,975
“IQ” frequency rank
72979
confusion score

Side-by-Side Comparison

Feature IIe IQ
Definition Deuxième. QI, quotient intellectuel.

Where the eye mixes IIe and IQ

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. IIe runs 3 letters (VVV) against IQ's 2 (VC) - the length gap alone is often enough to separate them once you know to check it.

3 ch
IIe
2 ch
IQ

Why the eye confuses IIe with IQ

These two trip readers on the page rather than in the ear: IIe is \dø.zjɛm\ while IQ is \iːˈkuː\. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 72979, derived from the frequency rank of both members and their visual similarity.

IIe is recorded at frequency rank #25,004, classified as anadj, pronounced \dø.zjɛm\. IQ is at rank #47,975, tagged as anoun, pronounced \iːˈkuː\.

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 72979, this pair ranks #42,126 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of IIe vs IQ

Shared letters: i. Private to "IIe": e. Private to "IQ": q.

"IIe" · 3 letters · shape VVV  ·  "IQ" · 2 letters · shape VC

Frequently Asked Questions

Can "IIe" and "IQ" be used interchangeably?
No - they are not even the same part of speech. "IIe" is an adjective and "IQ" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "IIe" or "IQ" show up more?
"IIe" is the more common of the two: it sits at frequency rank #25,004 in our French list, against #47,975 for "IQ". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "IIe" and "IQ" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "IIe" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "IQ" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #42,126 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "IIe" and "IQ" also get mixed up with nearby pairs, the highest-scored neighbour is "IQ vs isi". Nearby pair

Confusion rank #42,126 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