Ag*gress" (&?;), v. i. [imp. & p. p. Aggressed (&?;); p. pr. & vb. n. Aggressing.] [L. aggressus, p. p. of aggredi to go to, approach; ad + gradi to step, go, gradus step: cf. OF. aggresser. See Grade.]
To commit the first act of hostility or offense; to begin a quarrel or controversy; to make an attack; -- with on.
© Webster 1913
Ag*gress", v. t.
To set upon; to attack. [R.]
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Ag*gress", n. [L. aggressus.]
Aggression. [Obs.]
Their military aggresses on others.
Sir M. Hale.
© Webster 1913