isivsIssyWhich spelling fits?

Quick tell: isi is a verb, Issy is a name, so they fill different roles in a sentence.

Which to use

“isi” is a verb and “Issy” is a name - they look or sound alike but fill different roles in a sentence.

#49,170
“isi” frequency rank
#21,670
“Issy” frequency rank
70840
confusion score

Side-by-Side Comparison

Feature isi Issy
Definition Deuxième personne du singulier du futur de l’indicatif du verbe isal/isañ. Dénomination ancienne ou familière de la commune d’Issy-les-Moulineaux

Same sound, different letters: isi vs Issy

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 2 letters.

3 ch
isi
4 ch
Issy

Ear matches; page differs - isi and Issy

Say them out loud and nothing separates them: isi and Issy carry the same recorded pronunciation, \ˈisːi\. Grammar is what tells them apart: one is averb, the other aname, so most sentences will only accept one of them. They differ by 1 letter(s) in length. Our composite confusion score for this pair is 70840, derived from the frequency rank of both members and their visual similarity.

isi is recorded at frequency rank #49,170, classified as averb, pronounced \ˈisːi\. Issy is at rank #21,670, tagged as aname, pronounced \i.si\.

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 70840, this pair ranks #49,792 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of isi vs Issy

Shared letters: is. Private to "isi": -. Private to "Issy": y.

"isi" · 3 letters · shape VCV  ·  "Issy" · 4 letters · shape VCCV

Known mistypes of this pair

  • Issyissyy · isy · isys · sisy

Frequently Asked Questions

Can "isi" and "Issy" be used interchangeably?
No - they are not even the same part of speech. "isi" is a verb and "Issy" a name, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "isi" or "Issy" show up more?
"Issy" is the more common of the two: it sits at frequency rank #21,670 in our French list, against #49,170 for "isi". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

"isi" and "Issy" share a sound, keep the gloss open, then jump to the headword or a nearby trap.

  • Full dictionary entry for "isi" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Issy" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #49,792 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "isi" and "Issy" also get mixed up with nearby pairs, the highest-scored neighbour is "ime 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 #49,792 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