Which to use
“ace” and “ai” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #5,930
- “ace” frequency rank
- #4,818
- “ai” frequency rank
- 10748
- confusion score
Side-by-Side Comparison
| Feature | ace | ai |
|---|---|---|
| Definition | A playing card showing a single pip, typically the highest or lowest ranking card in a game. | A type of three-toed sloth, Bradypus tridactylus, endemic to forests of southern Venezuela, the Guianas, and northern Brazil. |
Where the eye mixes ace and ai
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between ace and ai
A purely visual mix-up. ace (/eɪs/) and ai (/ˈɑ.i/) 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 10748, derived from the frequency rank of both members and their visual similarity.
ace is recorded at frequency rank #5,930, classified as anoun, pronounced /eɪs/. ai is at rank #4,818, tagged as anoun, pronounced /ˈɑ.i/.
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 10748, this pair ranks #490,742 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of ace vs ai
Shared letters: a. Private to "ace": ce. Private to "ai": i.
"ace" · 3 letters · shape VCV · "ai" · 2 letters · shape VV
Frequently Asked Questions
Is swapping "ace" for "ai" ever safe?
Which is more common, "ace" or "ai"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "ace" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ai" - compare definitions side by side with the headword page. Word entry
- This pair ranks #490,742 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "ace" and "ai" also get mixed up with nearby pairs, the highest-scored neighbour is "ace vs amb". Nearby pair
Confusion rank #490,742 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.