Which to use
“apt” is an adjective and “auto” is a noun - they look or sound alike but fill different roles in a sentence.
- #41,338
- “apt” frequency rank
- #1,421
- “auto” frequency rank
- 42759
- confusion score
Side-by-Side Comparison
| Feature | apt | auto |
|---|---|---|
| Definition | apto | solenidade; ação pública |
Where the eye mixes apt and auto
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: apt vs auto
These two trip readers on the page rather than in the ear: apt is /æpt/ while auto is /ˈaw.tu/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 42759, derived from the frequency rank of both members and their visual similarity.
apt is recorded at frequency rank #41,338, classified as anadj, pronounced /æpt/. 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 42759, this pair ranks #22,976 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of apt vs auto
Shared letters: at. Private to "apt": p. Private to "auto": ou.
"apt" · 3 letters · shape VCC · "auto" · 4 letters · shape VVCV
Known mistypes of this pair
- auto ← atuo · auot · autto · uato
Frequently Asked Questions
Is swapping "apt" for "auto" ever safe?
In ordinary Portuguese text, does "apt" or "auto" show up more?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "apt" 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 #22,976 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "apt" and "auto" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs apt". 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 #22,976 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.