Answer:

assailer

Answer	Crossword Clue
ASSAILER	Attacker
ASSAILER	One casting aspersions
ASSAILER	Attacker.

ASSAILER	Aggressive one
ASSAILER	One on the attack
ASSAILER	Mugger

Crossword

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