Answer:

howler

Answer	Crossword Clue
HOWLER	It's uproariously funny
HOWLER	Wolf, at times
HOWLER	Funny blunder

HOWLER	Funny mistake
HOWLER	S. A. monkey
HOWLER	Ludicrous mistake
HOWLER	Screwup
HOWLER	Sidesplitter
HOWLER	Extremely funny joke

Crossword

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