Toxic

(Gaming) - A harmful behaviour either through harassment of another player by text or speech, or through gameplay that compromises the in built mechanics of the game to disrupt the competitive integrity of a match.

*In a Rocket League ranked match*
ToxicTim: Wah Wah "my teammate did a bad play, this guy sucks, I'm gonna score in our own goal"
Everyone "you're fucking toxic bro"