insetovsistoTell them apart

Quick tell: inseto is a noun, isto is a pronoun, so they fill different roles in a sentence.

Which to use

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

#9,063
“inseto” frequency rank
#349
“isto” frequency rank
9412
confusion score

Side-by-Side Comparison

Feature inseto isto
Definition animal artrópode, com exoesqueleto quitinoso, de seis patas, usualmente alado (um ou dois pares de asas), pertencente à classe Insecta indica algo que está próximo a quem fala ou assunto de que se fala

Where the eye mixes inseto and isto

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. inseto runs 6 letters (VCCVCV) against isto's 4 (VCCV) - the length gap alone is often enough to separate them once you know to check it.

6 ch
inseto
4 ch
isto

Why the eye confuses inseto with isto

These two trip readers on the page rather than in the ear: inseto is /ĩ.ˈsɛ.tu/ while isto is /ˈis.tu/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 9412, derived from the frequency rank of both members and their visual similarity.

inseto is recorded at frequency rank #9,063, classified as anoun, pronounced /ĩ.ˈsɛ.tu/. isto is at rank #349, tagged as apron, pronounced /ˈis.tu/.

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 9412, this pair ranks #64,024 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of inseto vs isto

Shared letters: iost. Private to "inseto": en. Private to "isto": -.

"inseto" · 6 letters · shape VCCVCV  ·  "isto" · 4 letters · shape VCCV

Known mistypes of this pair

  • inseto ← inesto · innseto · inseot · insetto · insseto · insteo · isneto · niseto
  • isto ← isot · issto · istto · itso

Frequently Asked Questions

Can "inseto" and "isto" be used interchangeably?
No - they are not even the same part of speech. "inseto" is a noun and "isto" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "inseto" vs "isto" - which ranks higher?
"isto" is the more common of the two: it sits at frequency rank #349 in our Portuguese list, against #9,063 for "inseto". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "inseto" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "isto" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #64,024 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "inseto" and "isto" also get mixed up with nearby pairs, the highest-scored neighbour is "inato vs inseto". 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 #64,024 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