# ace

> English word · Noun · IPA /eɪs/ · frequency rank #5,930

## Definitions
1. A playing card showing a single pip, typically the highest or lowest ranking card in a game.
2. A die face marked with a single dot, typically representing the number one.
3. The ball marked with the number 1 in pool and related games.
4. A dollar bill.
5. A very small quantity or degree; a particle; an atom; a jot.
6. A serve won without the opponent hitting the ball.
7. A point won by a single stroke, as in handball, rackets, etc.
8. The best pitcher on the team.
9. A run.
10. A hole in one.
11. An expert at something; a maverick, genius; a person of supreme talent.
12. A military aircraft pilot who is credited with shooting down many enemy aircraft, typically five or more.
13. A perfect score on a school exam.
14. Any of various hesperiid butterflies.
15. A quark.

## Etymology
Inherited from Middle English as, from Old French as, from Latin as, assis (“unity, copper coin, the unit of coinage”), probably borrowed from Etruscan. Doublet of as. Likely related or deriving ultimately from Proto-Indo-European *h₁éǵʰs, or otherwise taking from Proto-Indo-European *h₂eḱ- (“sharp, pointed”) in the sense of "singular".

## Easily confused with
- **as** (https://plainspell.com/en/vs/ace-vs-as)
- **at** (https://plainspell.com/en/vs/ace-vs-at)
- **an** (https://plainspell.com/en/vs/ace-vs-an)
- **AM** (https://plainspell.com/en/vs/ace-vs-am)
- **AL** (https://plainspell.com/en/vs/ace-vs-al)
- **AD** (https://plainspell.com/en/vs/ace-vs-ad)
- **ah** (https://plainspell.com/en/vs/ace-vs-ah)
- **AP** (https://plainspell.com/en/vs/ace-vs-ap)
- **ai** (https://plainspell.com/en/vs/ace-vs-ai)
- **aw** (https://plainspell.com/en/vs/ace-vs-aw)
- **AR** (https://plainspell.com/en/vs/ace-vs-ar)
- **AU** (https://plainspell.com/en/vs/ace-vs-au)
- **AF** (https://plainspell.com/en/vs/ace-vs-af)
- **ag** (https://plainspell.com/en/vs/ace-vs-ag)
- **AK** (https://plainspell.com/en/vs/ace-vs-ak)
- **AZ** (https://plainspell.com/en/vs/ace-vs-az)
- **av** (https://plainspell.com/en/vs/ace-vs-av)
- **ay** (https://plainspell.com/en/vs/ace-vs-ay)
- **AE** (https://plainspell.com/en/vs/ace-vs-ae)
- **ao** (https://plainspell.com/en/vs/ace-vs-ao)

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/ace