An individual who's actions or behaviours deviate from what is normal, moral or tastefull. A matter of opinion or fact.
Usually applied when describing someones sexual desires or actions, can also apply to law.
Licking a stranger's feet - Pervert
Licking your wife's feet because it makes her giggle - Normal
Talking about licking your wife's feet - depends on who it's to.
Killing someone in a drink drive accident and then bribing the jury - a perversion of justice.
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