Someone or something aggressive shows a lot of energy and has a strong impact. After the aggressive salesman stopped them again on their way through the mall, the couple got aggressive and replied in a loud, made-up foreign language until he went away.

Being aggressive often means being physical or showing force, but it is equally powerful as an adjective reflecting a forceful determination to get something done. An aggressive football player may tackle everyone in sight to get a win, while a driven student might tackle a project or problem head-on with aggressive determination to improve their grade. Aggressive comes from the Latin aggress-, "attack," and being aggressive shows an intention to attack bodily, mentally, or verbally whatever gets in the way.

Definitions of aggressive

adj characteristic of an enemy or one eager to fight

aggressive acts against another country”
characterized by enmity or ill will

adj having or showing determination and energetic pursuit of your ends

“an aggressive businessman”
“an aggressive basketball player”
“he was aggressive and imperious”
aggressive drivers”
battleful, bellicose, combative
having or showing a ready disposition to fight
competitive, militant
showing a fighting disposition
hard-hitting, high-pressure
aggressively and persistently persuasive
unsolicited and resisted by the management of the target company ( used of attempts to buy or take control of a business)
blatantly aggressive
boisterously and noisily aggressive
predatory, rapacious, raptorial, ravening, vulturine, vulturous
living by preying on other animals especially by catching living prey
pugnacious, rough
ready and able to resort to force or violence
full of fighting spirit
defiantly aggressive
assertive, self-asserting, self-assertive
aggressively self-assured
characterized by enmity or ill will
for the purpose of attack rather than defense
nonaggressive, unaggressive
not aggressive; not given to fighting or assertiveness
not forceful
inclined to timidity or lack of self-confidence
peaceable, peaceful
not disturbed by strife or turmoil or war
show more antonyms...

adj tending to spread quickly

“an aggressive tumor”
fast-growing, strong-growing
marked by a tendency to spread especially into healthy tissue

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