apitovsautoWhich spelling fits?

Which to use

“apito” and “auto” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#14,770
“apito” frequency rank
#1,421
“auto” frequency rank
16191
confusion score

Side-by-Side Comparison

Feature apito auto
Definition instrumento feito em madeira, metal, plástico ou outro material que produz som ao ser assoprado, e usado com diversos fins como alarme, instrumento musical, sinalização, caça, etc. solenidade; ação pública

Where the eye mixes apito and auto

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
apito
4 ch
auto

Why the eye confuses apito with auto

A purely visual mix-up. apito (/aˈpi.tu/) and auto (/ˈaw.tu/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 16191, derived from the frequency rank of both members and their visual similarity.

apito is recorded at frequency rank #14,770, classified as anoun, pronounced /aˈpi.tu/. auto is at rank #1,421, tagged as anoun, pronounced /ˈaw.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 16191, this pair ranks #55,423 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of apito vs auto

Shared letters: aot. Private to "apito": ip. Private to "auto": u.

"apito" · 5 letters · shape VCVCV  ·  "auto" · 4 letters · shape VVCV

Known mistypes of this pair

  • apitoaipto · apiot · apitto · appito · aptio · paito
  • autoatuo · auot · autto · uato

Frequently Asked Questions

Do "apito" and "auto" mean the same thing in a sentence?
No. They are said differently (/aˈpi.tu/ versus /ˈaw.tu/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Portuguese text, does "apito" or "auto" show up more?
"auto" is the more common of the two: it sits at frequency rank #1,421 in our Portuguese list, against #14,770 for "apito". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

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

  • Full dictionary entry for "apito" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "auto" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #55,423 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "apito" and "auto" also get mixed up with nearby pairs, the highest-scored neighbour is "apito vs apo". 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 #55,423 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