Assailant

a.	1.	Assailing; attacking.
n.	1.	One who, or that which, assails, attacks, or assaults; an assailer. An assailant of the church. - Macaulay.

Noun

1.

assailant - someone who attacks Synonyms: aggressor, assaulter, attacker

adversary, aggressor, antagonist, assailer, assaulter, attacker, combatant, enemy, foe, foeman, invader, mugger, opponent, opposing party, opposite camp, raider, the loyal opposition, the opposition