Which to use
“iss” is a verb and “iu” is a pronoun - they look or sound alike but fill different roles in a sentence.
- #22,303
- “iss” frequency rank
- #46,833
- “iu” frequency rank
- 69136
- confusion score
Side-by-Side Comparison
| Feature | iss | iu |
|---|---|---|
| Definition | Deuxième personne du singulier de l’impératif présent de essen. | Je. |
Where the eye mixes iss and iu
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between iss and iu
These two trip readers on the page rather than in the ear: iss is \ɪs\ while iu is \ˈiu\. 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 (verb vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 69136, derived from the frequency rank of both members and their visual similarity.
iss is recorded at frequency rank #22,303, classified as averb, pronounced \ɪs\. iu is at rank #46,833, tagged as apron, pronounced \ˈiu\.
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 69136, this pair ranks #56,322 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of iss vs iu
Shared letters: i. Private to "iss": s. Private to "iu": u.
"iss" · 3 letters · shape VCC · "iu" · 2 letters · shape VV
Frequently Asked Questions
Can "iss" and "iu" be used interchangeably?
Which is more common, "iss" or "iu"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "iss" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "iu" - compare definitions side by side with the headword page. Word entry
- This pair ranks #56,322 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "iss" and "iu" also get mixed up with nearby pairs, the highest-scored neighbour is "isi vs iu". Nearby pair
Confusion rank #56,322 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.