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[krak-er-jak] /ˈkræk ərˌdʒæk/ Informal.
a person or thing that shows marked ability or excellence.
of marked ability; exceptionally fine.
Also, crackajack.
Origin of crackerjack
1890-95, Americanism; earlier crackajack, rhyming compound based on crack (adjective); -a- as in blackamoor; jack1 in sense “fellow, buddy” Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for crackerjack
Historical Examples
  • If that Mornsby deal had only gone through, wed have had a crackerjack, said Jim regretfully.

  • "I am not aiming to be a crackerjack like you," grinned Dick.

    Walter and the Wireless Sara Ware Bassett
  • Pasinsky was Rothman's senior drummer and was generally acknowledged a crackerjack.

    The Competitive Nephew Montague Glass
  • "You'd be a crackerjack to talk to the old ladies," Lessing generously praised him.

    The Lovely Lady Mary Austin
  • I said I didnt know much about him, except that he came from Stanford University, where he was a crackerjack on the gridiron.

    For the Honor of Randall Lester Chadwick
  • Guess we deserve it, too, for we're on the way to bein' the crackerjack section of them all.

    The House of Torchy Sewell Ford
  • We've been good friends all my life, and he's such a crackerjack old fellow.

    The Militants Mary Raymond Shipman Andrews
  • It makes a crackerjack market for me in the cattle business.

  • This innocent question no less than the unaffected simplicity and sincerity of the questioner overpowered "crackerjack."

    A Little Book for Christmas Cyrus Townsend Brady
  • Didn't we have a crackerjack team, the fastest that ever represented old Wayne?

    The Young Pitcher Zane Grey
British Dictionary definitions for crackerjack


a person or thing of exceptional quality or ability
Word Origin
C20: changed from crack (first-class) + jack1 (man)
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
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Slang definitions & phrases for crackerjack



: He estimates that a crackerjack examiner working under optimum conditions would find 10 to 15 percent of his cases to be inconclusive/ I'm a crackerjack story teller


A person or thing that is remarkable, wonderful, superior, etc: Signorelli is a crackerjack

[late 1880s+; origin uncertain; perhaps a fanciful extension of cracker in the mid-19th-century British sense ''something approaching perfection,'' which is also reflected in terms like crack shot, crack troops, etc, and based on an echoic expression of speed; hence also cracking; the term is reinforced in the US by late 19th-century trademark Cracker Jack for a popcorn and peanut confection]

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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