Which to use
“idem” is an adverb and “ire” is a noun - they look or sound alike but fill different roles in a sentence.
- #6,513
- “idem” frequency rank
- #23,590
- “ire” frequency rank
- 30103
- confusion score
Side-by-Side Comparison
| Feature | idem | ire |
|---|---|---|
| Definition | De même, pareillement. On l’emploie pour éviter de répéter ce qui vient d’être dit ou écrit. | Colère. |
Where the eye mixes idem and ire
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses idem with ire
These two trip readers on the page rather than in the ear: idem is \i.dɛm\ while ire is \iʁ\. 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 (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 30103, derived from the frequency rank of both members and their visual similarity.
idem is recorded at frequency rank #6,513, classified as anadv, pronounced \i.dɛm\. ire is at rank #23,590, tagged as anoun, pronounced \iʁ\.
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 30103, this pair ranks #312,468 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of idem vs ire
Shared letters: ei. Private to "idem": dm. Private to "ire": r.
"idem" · 4 letters · shape VCVC · "ire" · 3 letters · shape VCV
Known mistypes of this pair
- idem ← diem · iddem · idemm · idme · iedm
Frequently Asked Questions
Is swapping "idem" for "ire" ever safe?
Frequency check: "idem" vs "ire" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "idem" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ire" - compare definitions side by side with the headword page. Word entry
- This pair ranks #312,468 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "idem" and "ire" also get mixed up with nearby pairs, the highest-scored neighbour is "ire vs isi". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #312,468 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.