aggression

noun

1.
a disposition to behave aggressively
fightsomeness
2.
a feeling of hostility that arouses thoughts of attack
aggressiveness
3.
violent action that is hostile and usually unprovoked
hostility
Derived from:
aggress
4.
the act of initiating hostilities
scather
Derived from:
aggress
5.
deliberately unfriendly behavior
besetting