19 possible answers to
Answers with 3 characters: BAD Answers with 4 characters: EVIL VILE Answers with 5 characters: DIRTY STAIN TAINT VENAL Answers with 6 characters: DEBASE POISON ROTTEN DEFILE SEDUCE Answers with 7 characters: POLLUTE DEGRADE DEPRAVE SUBVERT VITIATE Answers with 8 characters: DECADENT Answers with 10 characters: ADULTERATE