aúnvsayWhat's the difference?

Quick tell: aún is a adverb, ay is an intj, so they fill different roles in a sentence.

Which to use

“aún” is an adverb and “ay” is an intj - they look or sound alike but fill different roles in a sentence.

#240
“aún” frequency rank
#1,538
“ay” frequency rank
1778
confusion score

Side-by-Side Comparison

Feature aún ay
Definition Indica que el hecho persiste en el presente, aunque pueda cambiar en lo sucesivo.. Expresa dolor o pena.

Where the eye mixes aún and ay

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
aún
2 ch
ay

Why the eye confuses aún with ay

These two trip readers on the page rather than in the ear: aún is [aˈũn] while ay is [ˈaj]. 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 (adverb vs intj), which is usually the fastest check. Our composite confusion score for this pair is 1778, derived from the frequency rank of both members and their visual similarity.

aún is recorded at frequency rank #240, classified as anadv, pronounced [aˈũn]. ay is at rank #1,538, tagged as anintj, pronounced [ˈaj].

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 1778, this pair ranks #321,485 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of aún vs ay

Shared letters: a. Private to "aún": . Private to "ay": y.

"aún" · 3 letters · shape VVC  ·  "ay" · 2 letters · shape VV

Frequently Asked Questions

Is swapping "aún" for "ay" ever safe?
No - they are not even the same part of speech. "aún" is an adverb and "ay" an intj, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "aún" or "ay" show up more?
"aún" is the more common of the two: it sits at frequency rank #240 in our Spanish list, against #1,538 for "ay". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "aún" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ay" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #321,485 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "aún" and "ay" also get mixed up with nearby pairs, the highest-scored neighbour is "atl vs ay". Nearby pair

Confusion rank #321,485 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