Serbian German French

  1. in politics, an unprovoked attack often involving an escalating series of threats aimed at intimidating an opponent; The actions of Nazi Germany, under Adolf Hitler in the 1930s, leading to World War II were considered to be aggressive; The invasion of Kuwait by Iraq in 1990 was condemned as an act of aggression
  2. a disposition to behave aggressively
  3. a feeling of hostility that arouses thoughts of attack; aggressiveness
  4. deliberately unfriendly behavior
  5. the act of initiating hostilities
  6. violent action that is hostile and usually unprovoked; hostility

aggressionn.(biology) In biology, behavior used to intimidate or injure another organism (of the same or of a different species), usually for the purposes of gaining a territory, a mate, or food; Aggression often involves an escalating series of threats aimed at intimidating an opponent without having to engage in potentially dangerous physical contact; Aggressive signals include roaring by wapiti (American Elk), snarling by dogs, the fluffing up of feathers by birds, and the raising of fins by some species of fish