ino vs isso, What's the Difference?

Which to use

“ino” is a noun and “isso” is a pronoun - they look or sound alike but fill different roles in a sentence.

#49,532
“ino” frequency rank: #40
“isso” frequency rank: 49572
confusion score

Side-by-Side Comparison

Feature	ino	isso
Definition	ser do sexo feminino; fêmea	essa coisa ou esse assunto; essas coisas; esses assuntos

Letter map: ino vs isso

Shared letters muted; letters that set ino and isso apart highlighted. Shared run: 2. ino runs 3 letters (VCV) against isso's 4 (VCCV) - the length gap alone is often enough to separate them once you know to check it.

3 ch

ino

4 ch

isso

Grammar separator: ino vs isso

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ino is anoun and issoapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 49572, derived from the frequency rank of both members and their visual similarity.

ino is recorded at frequency rank #49,532, classified as anoun. isso is at rank #40, tagged as apron.

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 49572, this pair ranks #15,430 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of ino vs isso

Shared letters: io. Private to "ino": n. Private to "isso": s.

"ino" · 3 letters · shape VCV · "isso" · 4 letters · shape VCCV

Known mistypes of this pair

isso ← iso · isos · siso

Frequently Asked Questions

Is swapping "ino" for "isso" ever safe?

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

In ordinary Portuguese text, does "ino" or "isso" show up more?

"isso" is the more common of the two: it sits at frequency rank #40 in our Portuguese list, against #49,532 for "ino". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've compared "ino" and "isso". Here's where to go from here.

Full dictionary entry for "ino" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "isso" - compare definitions side by side with the headword page. Word entry
This pair ranks #15,430 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"ino" and "isso" also get mixed up with nearby pairs, the highest-scored neighbour is "ino vs ioiô". 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 #15,430 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.