crackerjack

noun

- a person or thing of marked excellence (Merriam-Webster)

adjective

- of excellent quality or ability; fine (The American Heritage® Dictionary)

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WORD ORIGIN

Crackerjack was probably created by combining “crack”, meaning excellence or quality, and “jack”, which is slang for a man.

It can be used either as a noun (She’s a real crackerjack!) or as an adjective (He’s a crackerjack programmer!).

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SYNONYMS

(noun)
ace, artist, champ, hotshot, maestro, magician, master, maven, natural, old pro, master, pro, prodigy, professional, pundit, ringer, star, superstar, whiz, wizard

(adjective)
able, accomplished, adroit, capable, crack, deft, dexterous, expert, first-class, first-rate, masterful, masterly, practiced, proficient, quick, savvy, sharp, skilled, skilful, slick, whiz, wizard

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ANTONYMS

(noun)
also-ran, amateur, dud, dilettante, failure, flop, flunkey, greenhorn, lemon, neophyte, novice, rookie, turkey, washout

(adjective)
awkward, bumbling, clumsy, fumbling, incapable, incompetent, inept, inexperienced, maladroit, unskilled

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SMUGGLE OWAD into a conversation
say something like:

“If you’re still having problems with your e-mail, just ask Felix. He’s a digital CRACKERJACK.”