autovsayunoConfusable pair

Which to use

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

#871
“auto” frequency rank
#15,018
“ayuno” frequency rank
15889
confusion score

Side-by-Side Comparison

Feature auto ayuno
Definition Vehículo de cuatro ruedas, cerrado, con asientos, propulsado por un motor de combustión o eléctrico, destinado al transporte de una a cinco personas. Acción y efecto de ayunar; abstención de ingerir alimentos.

Where the eye mixes auto and ayuno

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

4 ch
auto
5 ch
ayuno

Why the eye confuses auto with ayuno

A purely visual mix-up. auto ([ˈawt̪o]) and ayuno ([aˈʝuno]) 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 15889, derived from the frequency rank of both members and their visual similarity.

auto is recorded at frequency rank #871, classified as anoun, pronounced [ˈawt̪o]. ayuno is at rank #15,018, tagged as anoun, pronounced [aˈʝuno].

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 15889, this pair ranks #278,376 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of auto vs ayuno

Shared letters: aou. Private to "auto": t. Private to "ayuno": ny.

"auto" · 4 letters · shape VVCV  ·  "ayuno" · 5 letters · shape VVVCV

Known mistypes of this pair

  • autoatuo · auot · autto · uato
  • ayunoauyno · aynuo · ayunno · ayuon · ayyuno · yauno

Frequently Asked Questions

Can "auto" and "ayuno" be used interchangeably?
No. They are said differently ([ˈawt̪o] versus [aˈʝuno]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "auto" or "ayuno"?
"auto" is the more common of the two: it sits at frequency rank #871 in our Spanish list, against #15,018 for "ayuno". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Eye-level mix-up between "auto" and "ayuno" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "auto" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ayuno" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #278,376 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "auto" and "ayuno" also get mixed up with nearby pairs, the highest-scored neighbour is "ayo vs ayuno". 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 #278,376 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list