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 (krăk′ər-jăk′) also crack·a·jack (krăk′ə-)
adj. Slang
Of excellent quality or ability; fine.

[Probably from crack, first-rate + jack.]

crack′er·jack′ n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.




a person or thing of exceptional quality or ability
[C20: changed from crack (first-class) + jack1 (man)]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

Crack′er Jack`

a confection of caramel-coated popcorn.


(ˈkræk ərˌdʒæk)
1. a person or thing that shows marked ability or excellence.
2. exceptionally fine.
[1890–95, Amer.; earlier crackajack, rhyming compound based on crack (adj.)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.crackerjack - someone excellent of their kind; "he's a jimdandy of a soldier"
nonesuch, nonpareil, nonsuch, apotheosis, ideal, paragon, saint - model of excellence or perfection of a kind; one having no equal
2.crackerjack - something excellent of its kind; "the bike was a jimdandy"
thing - an entity that is not named specifically; "I couldn't tell what the thing was"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


also crackajack
Slang. Having or demonstrating a high degree of knowledge or skill:
Slang. A person with a high degree of knowledge or skill in a particular field:
Informal: whiz.
Chiefly British: dab.
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


A. N (= person) → as m; (= thing) → bomba f
B. ADJbomba, súper
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


, (US) crackajack
n (= person)Kanone f (inf); (= thing)Knüller m (inf)
adjbombig (inf)
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in classic literature ?
They're modelled after the Yukon poling- boats, and you can bet your life they're crackerjacks. This creek'll be a snap alongside some of them Northern streams.
Poor Harry knew he had a specially, and a crackerjack, and it's up to me to find it."
"He drifted into seal hunting and became a crackerjack. For six years he was high line of both the Victoria and San Francisco fleets.