aggress

[ uh-gres ]

/ əˈgrɛs /

to commit the first act of hostility or offense; attack first.

to begin to quarrel.

to behave aggressively toward; attack (often followed by upon): wild animals aggressing their prey.

Origin of aggress

1565–75; < Latin aggressus (past participle of aggredī to attack), equivalent to ag- ag- + gred- (see grade) + -tus past participle suffix

They experience boredom, sickness, early deaths and they aggress, attacking and even killing human beings.

‘Blackfish’ Director: Killer Whales Don’t Belong in Captivity |Gabriela Cowperthwaite |October 24, 2013 |DAILY BEAST
If the body do not aggress, the spirit will not seek revenge.

Harper's New Monthly Magazine, Vol. 3, July, 1851 |Various

aggress

/ (əˈɡrɛs) /

(intr) to attack first or begin a quarrel

C16: from Medieval Latin aggressāre to attack, from Latin aggredī to attack, approach