\ ˈās How to pronounce ace (audio) \

Definition of ace

 (Entry 1 of 6)

1a : a die face marked with one spot
b : a playing card marked in its center with one pip
c : a domino end marked with one spot
2 : a very small amount or degree : particle
3 : a point scored especially on a service (as in tennis or handball) that an opponent fails to touch
4 : a golf score of one stroke on a hole also : a hole made in one stroke
5 : a combat pilot who has brought down at least five enemy airplanes
6a : a person who excels at something a computer ace
b : the best pitcher on a baseball team the ace of the staff
ace in the hole
1 : an ace dealt face down to a player (as in stud poker) and not exposed until the showdown
2 : an effective and decisive argument or resource held in reserve
within an ace of
: on the point of : very near to came within an ace of winning


aced; acing

Definition of ace (Entry 2 of 6)

transitive verb

1 : to score an ace against (an opponent)
2 : to make (a hole in golf) in one stroke
3 : to gain a decisive advantage over : defeat usually used with out
4a : to earn a high grade on (something, such as an examination) especially : to get an A on
b : to perform extremely well in he aced every subject


adjective (1)

Definition of ace (Entry 3 of 6)

: of first or high rank or quality an ace mechanic


adjective (2)

Definition of ace (Entry 4 of 6)

: asexual But ace individuals often still feel romantic attraction toward others, as well as a drive to cultivate intimate, loving relationships—just without an intrinsic interest in pursuing the sexual aspect.— Taryn Deoilers



Definition of Ace (Entry 5 of 6)

used for a bandage with elastic properties

Definition of ACE (Entry 6 of 6)

1 American Council on Education
2 \ ˌā-​(ˌ)sē-​ˈē How to pronounce ˌā-(ˌ)sē-ˈē (audio) , ˈās-​ \ angiotensin converting enzyme The ACE inhibitors are designer molecules developed specifically to attach to their target enzyme and prevent it from activating angiotensin. Virtually the only thing these drugs do in the body is to interact with ACE. However, ACE is not a very specific enzyme; it acts on hormones besides angiotensin.Harvard Medical Health Letter

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Other Words from ace

Adjective (2)

ace noun, plural aces
Like many other aces and aros, I grew up thinking I was broken. I was 19 before I heard the words "asexual" or "aromantic," before I found out that there were other people in the world like me. — Mikayla Micomonaco

Examples of ace in a Sentence


She won the match by scoring more than 30 aces. took a few lessons with a tennis ace to improve his backhand


She aced her entrance exams. He aced his annual physical. He aced his opponent on the last point of the match.
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Recent Examples on the Web: Noun

Djokovic hit 23 aces and 73 total winners to finish 10-8 in the fifth set. Tom Perrotta, WSJ, "Novak Djokovic Rolls to Wimbledon Title," 15 July 2018 Bonnie added 135 kills, 89 digs, 17 blocks and 12 aces. Brian Gosset, star-telegram, "Sisters duo has aspirations of playing in Olympics. They’re off to a good start," 13 July 2018 The death of ace pitcher Josè Fernàndez in September 2016 further exacerbated the situation. Jared Diamond, WSJ, "The Ex-Marlins Who Are Shaping the MLB Playoffs," 2 Oct. 2018 One night after Enyel De Los Santos won his major-league debut in an impressive spot start, Velasquez came off the disabled list, matched up with New York Mets ace Jacob deGrom, and delivered six scoreless innings. Scott Lauber,, "Phillies' Maikel Franco making a play to stay | Extra Innings," 12 July 2018 The American served five aces and secured four break points on her way to the next round. Nihal Kolur,, "Serena Williams Advances to Second Round of Wimbledon in Straight Sets," 2 July 2018 The Dodgers were the first one of those teams to lose since the Washington Nationals defeated the Minnesota Twins (with ace Johan Santana on the mound) on June 9, 2007. Steve Gardner, USA TODAY, "Marlins' win over Dodgers was MLB's biggest upset since 2007," 26 Apr. 2018 The Cubs hope Anthony Rizzo can give their offense a spark Thursday against Dodgers ace Clayton Kershaw. Mark Gonzales,, "Anthony Rizzo returns to lineup as Cubs take on Dodgers ace Clayton Kershaw," 28 June 2018 The unearned runs put the Phillies in a four-run hole, which felt like an eight-foot hole against Yankees ace Luis Severino. Matt Breen,, "Phillies shut out by Yankees as defense fails Jake Arrieta again," 26 June 2018

Recent Examples on the Web: Verb

Lexi Thompson also shot 72, acing the 166-yard sixth hole with an 8-iron., "Tiger Woods settles for a 70 using new putter," 29 June 2018 The show sunk to a near record-low 32.9 million viewers last year when Moonlight (domestic box-office: $27.9 million) aced out La La Land after that infamous envelope mix-up. Gary Levin, USA TODAY, "Oscars 2018: Jimmy Kimmel is secretly hoping for another 'Envelope-gate'," 27 Feb. 2018 Sophie competes on the local gymnastics team, aces her spelling tests, goes on loads of play- dates, and loves to download songs for her iPod. Jennifer Rabiner*, Redbook, ""Why Don't I Like My Own Child?"," 10 Nov. 2016 Under the current system, applicants must ace the famously difficult Specialized High School Admissions Test. Leslie Brody, WSJ, "Stuyvesant, Other Elite New York Public High Schools Could Admit Students Who Didn’t Pass State Tests," 18 Oct. 2018 The Tesla Model 3 has aced its first crash tests, scoring five stars across the board on the National Highway Traffic Safety Administration’s assessment. Fox News, "Tesla Model 3 gets five star rating in NHTSA crash tests," 21 Sep. 2018 Oliveira has shared four key tips for acing the online vintage hunt. Bianca Nieves, Glamour, "Passport Vintage Is Fashion People's Best-Kept Secret for Vintage Denim," 21 Aug. 2018 Best for Stomach Sleepers Pacific Coast Double DownAround Soft This pillow aced all lab tests, from multiple washings to withstanding weight, but testers were split on whether this combo of down and feathers was soft enough. The Good Housekeeping Institute, Good Housekeeping, "The Best Pillows to Help You Sleep Like a Baby," 12 Jan. 2018 Here are the guys acing summer style right now at the Wimbledon 2018 tournament. The Editors Of Gq, GQ, "Wimbledon 2018: What Stylish Guys Are Wearing to the Best-Dressed Tennis Tournament," 3 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ace.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ace


14th century, in the meaning defined at sense 1a


1923, in the meaning defined at sense 1

Adjective (1)

1926, in the meaning defined above

Adjective (2)

2009, in the meaning defined above

History and Etymology for ace


Middle English as, borrowed from Anglo-French, going back to Latin ass-, ās "copper money piece (at first a pound, but progressively reduced to a half-ounce), pound unit of weight, unit," of uncertain origin

Note: The word ās has been compared within Latin to asser "wooden beam, pole, post" (generalized from a plural asserēs, from a singular *assis?) and assis, axis (by hypercorrection?) "plank, board," though any relationship is far from certain. A loanword from Etruscan?

Adjective (1)

derivative of ace entry 1

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Learn More about ace

Dictionary Entries near ace


accustom oneself to






Statistics for ace

Last Updated

23 Apr 2019

Look-up Popularity

Time Traveler for ace

The first known use of ace was in the 14th century

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More Definitions for ace



English Language Learners Definition of ace

 (Entry 1 of 2)

: a playing card with one large figure in its center that can be the card with either the highest or lowest value
: a person who is very skilled at something
: a point scored on a serve that an opponent fails to hit in tennis



English Language Learners Definition of ace (Entry 2 of 2)

US, informal : to earn a very high grade on (an examination) : to get a grade of A on (an examination) : to perform very well on (a test or challenge)
: to score an ace against (an opponent in tennis)
US : to score an ace on (a hole in golf)


\ ˈās How to pronounce ace (audio) \

Kids Definition of ace

 (Entry 1 of 2)

1 : a playing card with one figure in its center
2 : expert entry 2 a flying ace



Kids Definition of ace (Entry 2 of 2)

: of the very best kind an ace reporter


\ ˈās How to pronounce Ace (audio) \

Medical Definition of Ace

 (Entry 1 of 2)

used for a bandage with elastic properties

Medical Definition of ACE (Entry 2 of 2)

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More from Merriam-Webster on ace

Rhyming Dictionary: Words that rhyme with ace

Thesaurus: All synonyms and antonyms for ace

Spanish Central: Translation of ace

Nglish: Translation of ace for Spanish Speakers

Britannica English: Translation of ace for Arabic Speakers

Comments on ace

What made you want to look up ace? Please tell us where you read or heard it (including the quote, if possible).


not to be persuaded, moved, or stopped

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