- 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.
- Psychiatry. overt or suppressed hostility, either innate or resulting from continued frustration and directed outward or against oneself.
Origin of aggression
- an attack or harmful action, esp an unprovoked attack by one country against another
- any offensive activity, practice, etcan aggression against personal liberty
- psychol a hostile or destructive mental attitude or behaviour
Word Origin and History for counter-aggression
1610s, "unprovoked attack," from French aggression (16c.), from Latin aggressionem (nominative aggressio) "a going to, an attack," noun of action from past participle stem of aggredi "to approach; attack," from ad- "to" (see ad-) + gradi (past participle gressus) "to step," from gradus "a step" (see grade). Psychological sense of "hostile or destructive behavior" first recorded 1912 in A.A. Brill's translation of Freud.
- Hostile or destructive behavior or actions.
- Behavior that is meant to intimidate or injure an animal of the same species or of a competing species but is not predatory. Aggression may be displayed during mating rituals or to defend territory, as by the erection of fins by fish and feathers by birds.