Dictionary.com

crackerjack

[ krak-er-jak ]
/ ˈkræk ərˌdʒæk /
Informal.
Save This Word!

noun
a person or thing that shows marked ability or excellence.
adjective
of marked ability; exceptionally fine.
QUIZ
QUIZ YOURSELF ON AFFECT VS. EFFECT!
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help
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”

Other definitions for crackerjack (2 of 2)

Cracker Jack

Trademark.
a confection of caramel-coated popcorn and peanuts.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use crackerjack in a sentence

British Dictionary definitions for crackerjack

crackerjack
/ (ˈkrækəˌdʒæk) informal /

adjective
excellent
noun
a person or thing of exceptional quality or ability

Word Origin for crackerjack

C20: changed from crack (first-class) + jack 1 (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
FEEDBACK