I. ˈa-(ˌ)grō noun
( plural aggros )
Etymology: probably aggr avation + -o (I), later taken as short for aggression
Date: 1969
1. British : deliberately aggressive, provoking, or violent behavior
2. British : exasperation , irritation
II. adjective
Date: 1970
: aggressive or aggressively daring in style or manner
aggro music
aggro surfing