Other crossword clues for answer "IMPUGN"IMPUGNAssail with wordsCast aspersions onChallenge in a wayThrow mud at, figurativelyCriticizeCall into questionRefuteCast doubt uponAttack by argument.Challenge as false.Attack as untrue.MalignAttack as falseCensureMake insinuations againstDenyChallengeThrow figurative mud at