aggress

intr.v., -gressed, -gress·ing, -gress·es.
To initiate an attack, war, quarrel, or fight: "America . . . guaranteed that no EC state would aggress against another" (John J. Mearsheimer).

[French agresser, from Latin aggredī, aggress-, to attack : ad-, ad- + gradī, to go.]

verb

To set upon with violent force: assail, assault, attack, beset, fall on (or upon), go at, have at, sail into, storm, strike. Informal light into, pitch into. See attack/defend.

Note: click on a word meaning below to see its connections and related words.

The verb has one meaning:

Meaning #1: take the initiative and go on the offensive
  Synonym: attack

---