aggravate 5 antonyms and opposites of aggravate. Verb — To make a bad situation, problem, or injury worse. Synonyms for aggravate adulterate alloy canker contaminate corrupt debase debauch defile deflower degrade deteriorate downgrade envenom exasperate exacerbate infect impair leaven pejorate set back stain sophisticate uplift vitiate weaken Antonyms for aggravate ameliorate improve mitigate repair restore ← Back to the full definition of aggravate