assvsatWhich spelling fits?

Quick tell: ass is a noun, at is a preposition, so they fill different roles in a sentence.

Which to use

“ass” is a noun and “at” is a preposition - they look or sound alike but fill different roles in a sentence.

#1,065
“ass” frequency rank
#21
“at” frequency rank
1086
confusion score

Side-by-Side Comparison

Feature ass at
Definition Any of several species of horse-like animals, especially Equus asinus, the domesticated of which are used as beasts of burden. In, near, or in the general vicinity of (a particular place).

Where the eye mixes ass and at

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

3 ch
ass
2 ch
at

Visual trap between ass and at

These two trip readers on the page rather than in the ear: ass is /æs/ while at is /æt/. 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 (noun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 1086, derived from the frequency rank of both members and their visual similarity.

ass is recorded at frequency rank #1,065, classified as anoun, pronounced /æs/. at is at rank #21, tagged as aprep, pronounced /æt/.

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 1086, this pair ranks #528,135 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ass vs at

Shared letters: a. Private to "ass": s. Private to "at": t.

"ass" · 3 letters · shape VCC  ·  "at" · 2 letters · shape VC

Frequently Asked Questions

Can "ass" and "at" be used interchangeably?
No - they are not even the same part of speech. "ass" is a noun and "at" a preposition, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ass" or "at"?
"at" is the more common of the two: it sits at frequency rank #21 in our English list, against #1,065 for "ass". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "ass" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "at" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #528,135 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "ass" and "at" also get mixed up with nearby pairs, the highest-scored neighbour is "ass vs Asta". Nearby pair

Confusion rank #528,135 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list