crackerjack
[noun]
Synonyms: dilly, corker, daisy, dandy, humdinger, jim-dandy, knockout, lalapalooza, lulu, nifty
[adjective]
Synonyms: proficient, adept, crack, expert, master, masterful, masterly, skilled, skillful

[TahlilGaran] English Synonym Dictionary ▲

crack·er·jack (krăkər-jăk) also crack·a·jack (krăkə-)
adj. Slang
Of excellent quality or ability; fine.

[TahlilGaran] American Dictionary ▲

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

[TahlilGaran] American Dictionary ▲

crackerjack
cracker·jack n.

[TahlilGaran] American Dictionary ▲