instakill /ˈɪnstəˌkɪl/adjective 1noun 1verb 1forms 3 adjective1 •(slang) Having the ability to instantly kill.Quite true re 3 hit DP instakill combo. — 1994 noun1 •(slang) An instant kill.Poisoned projectiles have a 10% chance of an instakill vs non-poison-resistant monsters. (Note that the Tsurugi of Murumasa and Vorpal Blade only have a 5% chance of an instakill.) — 2006 verb1 •To perform an instakill; to kill instantly. formsinstakilled · instakilling · instakills