debuff Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to reduce the effectiveness or strength of something. Example Sentence The debuff made the character weaker. More Example Sentences The potion can debuff your opponent's skills. Synonyms weaken; impair; diminish Antonyms boost; enhance; strengthen Hear It! Say It! Write It! debuff Switch to cursive Start Share with your friends: