1. (adj./adverb)The act of helping out your fellow bro.
2. (adverb) Furthering your status in the bro community (bro-mmunity).
1. "When Sean bought his thirsty friend Justin a Powerade after a hard game on ultimate frisbee, he was being very broactive.
2. "Mark broavtively stopped his friend James from making out with their friend Mike's girlfriend."
1.the act of engaging in the life of a friend
2.the act of participating in an activity requested by or for a friend.