kill steal noun 1verb 1forms 4 noun1 •(Internet) A finishing blow of this kind. verb1 •(Internet) In a multiplayer online game, to deal a finishing blow on an enemy that other player(s) had almost killed, without their consent, so that one gets the credit or rewards instead of them.They shoot their own teammates, they kill steal, they fill the chat window with the word ‘LOL’, they camp, and they smash people’s stuff. — 2013 formskill stole · kill stolen · kill stealing · kill steals