Answer: humdinger

AnswerCrossword Clue
HUMDINGERLulu
HUMDINGERA lulu.
HUMDINGERA whiz.
HUMDINGERJim-dandy.
HUMDINGERLollapalooza
HUMDINGERNonpareil
humdingera person, thing, action, or statement of remarkable excellence or effect.
humdingerperson, thing, action, or statement of remarkable excellence or effect
humdingera person or thing of striking excellence