Answer: haveat

AnswerCrossword Clue
HAVEAT

Tear into

HAVEAT

Take the offensive

HAVEAT

Deal with vigorously

HAVEAT
Attack, as one's work
HAVEAT
Dive into, as a pile of correspondence
HAVEATAttack
HAVEATTackle
HAVEATAttack.
HAVEATGo for
HAVEATSet upon
HAVEATFight