stylistic:style_transfer
Etymology

The term aggression comes from the Latin word aggressio, meaning attack. The Latin was itself a joining of ad - and gradi -, which meant step at. The first known use dates back to 1611, in the sense of an unprovoked attack.

A psychological sense of "hostile or destructive behavior" dates back to a 1912 English translation of Sigmund Freud 's writing. Alfred Adler theorized about an "aggressive drive" in 1908. Child raising experts began to refer to aggression, rather than anger, from the 1930s.