ia vs isi, What's the Difference?

Which to use

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

#6,099
“ia” frequency rank: #49,170
“isi” frequency rank: 55269
confusion score

Side-by-Side Comparison

Feature	ia	isi
Definition	Trente-deuxième lettre de l’alphabet cyrillique, я.	Deuxième personne du singulier du futur de l’indicatif du verbe isal/isañ.

Where the eye mixes ia and isi

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch

3 ch

isi

Visual trap between ia and isi

These two trip readers on the page rather than in the ear: ia is \ja\ while isi is \ˈisːi\. 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 (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 55269, derived from the frequency rank of both members and their visual similarity.

ia is recorded at frequency rank #6,099, classified as anoun, pronounced \ja\. 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 55269, this pair ranks #128,533 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ia vs isi

Shared letters: i. Private to "ia": a. Private to "isi": s.

"ia" · 2 letters · shape VV · "isi" · 3 letters · shape VCV

Frequently Asked Questions

Do "ia" and "isi" mean the same thing in a sentence?

No - they are not even the same part of speech. "ia" is a noun and "isi" a verb, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "ia" or "isi"?

"ia" is the more common of the two: it sits at frequency rank #6,099 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.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

Full dictionary entry for "ia" 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 #128,533 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"ia" and "isi" also get mixed up with nearby pairs, the highest-scored neighbour is "ime vs isi". Nearby pair

Confusion rank #128,533 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.