Collocations for aggressive - adj.

be, look, seem, sound
become, get, grow (esp. AmE), turn
make sb
Watching violence on TV makes some children more aggressive.

extremely, fairly, very, etc.
highly, particularly, really
the company's highly aggressive marketing techniques

increasingly
openly
Her mood became openly aggressive when his name was mentioned.

physically, verbally
sexually

towards/toward
He warned that his dog was aggressive towards/toward strangers.

with (esp. AmE)
Dogs of this breed can be aggressive with other dogs.

Aggressive is used with these nouns:
act, action, approach, attitude, behaviour, campaign, child, conduct, diplomacy, display, driving, encounter, expansion, impulse, instinct, manner, marketing, move, nationalism, player, posture, pursuit, questioning, response, stance, strategy, style, tactic, tendency, tone