Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “ace”

See all translations

ace

noun [C] uk   /eɪs/ us  

ace noun [C] (PLAYING CARD)

one of the four playing cards with a single mark or spot, which have the highest or lowest value in many card games: the ace of hearts/clubs/spades/diamonds

ace noun [C] (SKILLED PERSON)

informal a person who is very skilled at something: a tennis/flying ace

ace noun [C] (TENNIS)

in tennis, a serve (= a hit of the ball that starts play) that is so strong and fast that the other player cannot return the ball: That's the third ace Lawson has served this match.

ace

verb [T] uk   /eɪs/ US informal us  
to do very well in an exam: I was up all night studying, but it was worth it - I aced my chemistry final.

ace

adjective uk   /eɪs/ old-fashioned slang us  
excellent: He's an ace basketball player. That's an ace bike you've got there.
(Definition of ace from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of ace?
Add Cambridge dictionaries to your browser to your website

Definitions of “ace” in other dictionaries

Word of the Day

sail

When a boat or a ship sails, it travels on the water.

Word of the Day

Byronic, Orwellian and Darwinian: adjectives from names.

by Liz Walter,
April 15, 2015
Becoming an adjective is a strange kind of memorial, but it is often a sign of a person having had real influence on the world. Science is full of examples, from Hippocrates, the Greek medic born around 460 BC, who gave his name to the Hippocratic Oath still used by doctors today,

Read More 

dumbwalking noun

April 20, 2015
walking slowly, without paying attention to the world around you because you are consulting a smartphone He told me dumbwalking probably wouldn’t be a long-term problem.

Read More