the action of a state in violating by force the rights of another state, particularly its territorial rights; an unprovoked offensive, attack, invasion, or the like:The army is prepared to stop any foreign aggression.
any offensive action, attack, or procedure; an inroad or encroachment:an aggression upon one's rights.
the practice of making assaults or attacks; offensive action in general.
Psychiatryovert or suppressed hostility, either innate or resulting from continued frustration and directed outward or against oneself.
Latin aggressiōn- (stem of aggressiō), equivalent. to aggress(us) (see aggress) + -iōn- -ion
1.See corresponding entry in Unabridged peacefulness.