Quick Definition: The tendency of the larger society to make a woman or women in general feel guilty about having sex, or a perceive “larger” number of sexual partners. The so-called “double-standard”.
Full Definition:
The word and meaning of “slut” and “whore” are used by men and women alike to attack their enemies as a way of shaming them publicly. Because the larger American society is still, at its core, based on the fundamental Christian and evangelical views of its founders, society at large still perceives a woman who publicly is known for sleeping around as shameful.
Slut shaming doesn’t even have to be true – a girl who calls another girl a slut, just by doing so, an incur questions and feelings of lower worth with the girl she’s slut shaming and the larger social group.

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Usage:
She’s slut shaming Julie because Julie actually got Ryan to take her out on a date.
Related Terms: Player, Playette, PUA, Pick Up Artist, FPUA, Sex Location, ASD, LMR, Cognitive Dissonance, Social Conditioning, Social Dexterity