definition of
aggressive

[1] #1 aggressive a. having or showing determination and energetic pursuit of your ends; "an aggressive businessman"; "an aggressive basketball player"; "he was aggressive and imperious; positive in his convictions"; "aggressive drivers". wn

[2] #2 aggressive s. [fast-growing, strong-growing] tending to spread quickly; "an aggressive tumor". wn

[3] #3 aggressive s. [belligerent] characteristic of an enemy or one eager to fight; "aggressive acts against another country"; "a belligerent tone". wn