moral depravity or corruption, or an example of this; wickedness
A new philosophy generally means … the praise of some old vice — G K Chesterton
sexual immorality, esp prostitution
a grave moral fault
a habitual and usu minor fault, shortcoming, or character failing
habitual abnormal behaviour in a domestic animal that is detrimental to its health or usefulness
[Middle English via French from Latin vitium fault, vice]