1 definition by daymgirl

Top Definition
doing naughty things, being bad, doing something that society sees as bad or wrong, being evil, not caring, comiting a sin.
example 1:
person 1: Hey did u comit a sin last night?
person 2: Yes, i had a one night stand, if that's what you ment.

example 2:

I didn't listen to my parents. Oh, i'm so sinful.

example 3:
I like that hot ass guy with tattoos! He looks so sinful.
by daymgirl January 06, 2010

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