1) Evil 2) Perversive 3) Pestiferous 4) Tending to corrupt or pervert 5) Wicked 1) Evil 2) Perversive 
• (a.) Having the quality of taining or vitiating; tending to produce corruption.
Cor·rupt'ive adjective [ Latin corruptivus : confer French corruptif .] Having the quality of tainting or vitiating; tending to produce corruption. « It should be endued with some corruptive quality for so speedy a dissolution of the meat. Ray. » 
[adj] - tending to corrupt or pervert
corruptive 1. Tending to corrupt or pervert. 2. Having a bad effect on someone's character or behavior.
perversive adjective tending to corrupt or pervert