Which to use
“IRD” is a name and “isi” is a verb - they look or sound alike but fill different roles in a sentence.
- #48,611
- “IRD” frequency rank
- #49,170
- “isi” frequency rank
- 97781
- confusion score
Side-by-Side Comparison
| Feature | IRD | isi |
|---|---|---|
| Definition | Établissement public à caractère scientifique et technologique (EPST) français, sous la tutelle des ministères chargés de la Recherche et de la Coopération, remplaçant l’Office de la recherche scientifique et technique outre-mer (ORSTOM). | Deuxième personne du singulier du futur de l’indicatif du verbe isal/isañ. |
Letter map: IRD vs isi
Shared letters muted; letters that set IRD and isi apart highlighted. Shared run: 1.
Part-of-speech tell for IRD / isi
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: IRD is aname and isiaverb. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 97781, derived from the frequency rank of both members and their visual similarity.
IRD is recorded at frequency rank #48,611, classified as aname. 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 97781, this pair ranks #267 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of IRD vs isi
Shared letters: i. Private to "IRD": dr. Private to "isi": s.
"IRD" · 3 letters · shape VCC · "isi" · 3 letters · shape VCV
Frequently Asked Questions
Can "IRD" and "isi" be used interchangeably?
In ordinary French text, does "IRD" or "isi" show up more?
After this comparison
You've compared "IRD" and "isi". Here's where to go from here.
- Full dictionary entry for "IRD" 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 #267 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "IRD" and "isi" also get mixed up with nearby pairs, the highest-scored neighbour is "ime vs isi". Nearby pair
Confusion rank #267 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.