Answer:

humdinger

Answer	Crossword Clue
HUMDINGER	Lulu
HUMDINGER	A lulu.
HUMDINGER	A whiz.

HUMDINGER	Jim-dandy.
HUMDINGER	Lollapalooza
HUMDINGER	Nonpareil

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.