aggress

/AH0 G R EH1 S/
noun
  1. 1

    Aggression.

verb
  1. 1

    To set upon; to attack.

  2. 2

    (construed with on) To commit the first act of hostility or offense against; to begin a quarrel or controversy with someone; to make an attack against someone.

Source: https://en.wiktionary.org/wiki/aggress