Nearby words

  1. accustomed,
  2. accustomed to,
  3. accutane,
  4. accutron,
  5. acda,
  6. ace bandage,
  7. ace in the hole,
  8. ace inhibitor,
  9. ace it,
  10. ace out


Origin of ace

1250–1300; 1915 for def 4; Middle English as, aas < Old French as < Latin: a unit; cf. as2; sense 4 after French as in World War I; sense 5 < 4


American Council on Education.
Army Corps of Engineers. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ace

British Dictionary definitions for ace


/ (eɪs) /



informal superb; excellent

verb (tr)

Word Origin for ace

C13: via Old French from Latin as a unit, perhaps from a Greek variant of heis one


/ (eɪs) /

n acronym for

(in Britain) Advisory Centre for Education; a private organization offering advice on schools to parents
Allied Command Europe
angiotensin-converting enzymeSee ACE inhibitor
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for ace
Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with ace


In addition to the idioms beginning with ace

  • ace in the hole
  • ace it
  • ace out

also see:

  • hold all the aces
  • within an ace of
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.