1. debuff - Noun
2. debuff - Verb
debuff (plural debuffs)
(roleplaying games, video games) An effect that makes a game character weaker; a negative status effect.
debuff (third-person singular simple present debuffs, present participle debuffing, simple past and past participle debuffed)
(roleplaying games, video games) To make a character or unit weaker.