vice [1]
n
1 an immoral, wicked, or evil habit, action, or trait
2 habitual or frequent indulgence in pernicious, immoral, or degrading practices
3 a specific form of pernicious conduct, esp. prostitution or sexual perversion
4 a failing or imperfection in character, conduct, etc.
smoking is his only vice
5 (Pathol, obsolete) any physical defect or imperfection
6 a bad trick or disposition, as of horses, dogs, etc.
(C13: via Old French from Latin vitium a defect)
♦
viceless adj