Aggress

ag-gres′, v.i. to make a first attack: to begin a quarrel: to intrude.— adj. Aggre ′ive , making the first attack, or prone to do so: offensive as opposed to defensive.— ns. Aggre ′ivene ; Aggre ′or , one who attacks first. [L. aggredi , -gre us — ad , to, grad i , to step.]