intovsistoTell them apart

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

Which to use

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

#10,024
“into” frequency rank
#349
“isto” frequency rank
10373
confusion score

Side-by-Side Comparison

Feature into isto
Definition em indica algo que está próximo a quem fala ou assunto de que se fala

Where the eye mixes into and isto

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. into and isto follow the identical consonant-vowel pattern (VCCV). Same shape at a glance is often the real trap, independent of shared letters.

4 ch
into
4 ch
isto

Why the eye confuses into with isto

These two trip readers on the page rather than in the ear: into is /ˈɪn.tuː/, X-SAMPA: /"Intu:/ while isto is /ˈis.tu/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - n in “into” becomes s in “isto”, and the parts of speech differ too (preposition vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 10373, derived from the frequency rank of both members and their visual similarity.

into is recorded at frequency rank #10,024, classified as aprep, pronounced /ˈɪn.tuː/, X-SAMPA: /"Intu:/. 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 10373, this pair ranks #62,754 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of into vs isto

Shared letters: iot. Private to "into": n. Private to "isto": s.

"into" · 4 letters · shape VCCV  ·  "isto" · 4 letters · shape VCCV

Known mistypes of this pair

  • into ← innto · inot · intto · itno · nito
  • isto ← isot · issto · istto · itso

Frequently Asked Questions

Is swapping "into" for "isto" ever safe?
No - they are not even the same part of speech. "into" is a preposition and "isto" a pronoun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "into" or "isto" show up more?
"isto" is the more common of the two: it sits at frequency rank #349 in our Portuguese list, against #10,024 for "into". 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 "into" 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 #62,754 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "into" and "isto" also get mixed up with nearby pairs, the highest-scored neighbour is "ino vs into". 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 #62,754 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