crackajack
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Related to crackajack: crackerjack
crack·a·jack
(krăk′ə-jăk′)adj. Slang
Variant of crackerjack.
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.
crackajack
(ˈkrækəˌdʒæk)n, adj
a variant spelling of crackerjack
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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crackerjack
also crackajackadjective
Slang. Having or demonstrating a high degree of knowledge or skill:
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.