istovsitsWhich spelling fits?

Quick tell: isto is a pronoun, its is an adjective, so they fill different roles in a sentence.

Which to use

“isto” is a pronoun and “its” is an adjective - they look or sound alike but fill different roles in a sentence.

#349
“isto” frequency rank
#11,659
“its” frequency rank
12008
confusion score

Side-by-Side Comparison

Feature isto its
Definition indica algo que está próximo a quem fala ou assunto de que se fala adjetivo possessivo da terceira pessoa neutra do singular, dele ou dela.

Letter map: isto vs its

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

4 ch
isto
3 ch
its

Role in the sentence - isto and its

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: isto is apronoun and itsanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 12008, derived from the frequency rank of both members and their visual similarity.

isto is recorded at frequency rank #349, classified as apron, pronounced /ˈis.tu/. its is at rank #11,659, tagged as anadj.

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 12008, this pair ranks #60,702 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of isto vs its

Shared letters: ist. Private to "isto": o. Private to "its": -.

"isto" · 4 letters · shape VCCV  ·  "its" · 3 letters · shape VCC

Known mistypes of this pair

  • isto ← isot · issto · istto · itso

Frequently Asked Questions

Do "isto" and "its" mean the same thing in a sentence?
No - they are not even the same part of speech. "isto" is a pronoun and "its" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "isto" or "its"?
"isto" is the more common of the two: it sits at frequency rank #349 in our Portuguese list, against #11,659 for "its". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Done with this confusable. These links stay specific to "isto" and "its".

  • Full dictionary entry for "isto" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "its" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #60,702 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "isto" and "its" also get mixed up with nearby pairs, the highest-scored neighbour is "ino vs its". 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 #60,702 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list