To scan Facebook constantly, looking at everyone's profiles, interests, photos, etc. Often done on attractive people, or young boys in girls, and bets are placed as to who will grow up sexy.

Creeping is commonly done by jealous or skeptical girlfriends, to make sure their boyfriend is not talking to other girls, or commenting on their pictures.

Creeping is a common habit which is acceptable to a certain point. You know you have a problem when you know a little something about every kid in the upcoming grade 8 class, and you are graduated..
girl 1: Omg did you know ashley and john broke up :'(

girl 2: um.. no.. you never even talked to her in your whole life whats the problem?

girl 1: well i was creeping her so much i feel like were friends.

girl 2: ah. well then. continue.
by Rambo1107 February 3, 2010
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To have sex with someone, usually someone you're cheating with
"He been creeping with other women all over town, why you defending him?"
by Sarah May 22, 2003
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CREEP Definition #3

A CREEP is ANYONE, Male or Female, with Icky or Undesirable Behavior (see Creeper #1 & #2).

A MORE DETAILED LIST OF COMMON CREEPS #3
18. All Adulterers.
19. Tattooed Single-Parent Mothers Who Bring Home Lots of Men to have Sex With, while Their Kids Watch.
20. People who wear lots of Heavy Gold Jewelry to Show Off &To Give Them a Heavier Sense of Self-Worth.
21. Mothers who Tell Their Married Daughters that Affairs will “Spice Up” Their Marriages.
22. Drunk Fathers who have Sex with Their Daughters &/or Step Daughters.
23. Most Women that Wear Leopard Skin Inspired Clothing & Dark Sunglasses.
24. Fathers Who Take Their Teenage Sons to Bordellos/Whore Houses to Sexually “Break Them In” and to “Make Men Out of Them.”
25. All Cougars: Old Vain Women Who Need to Have Sex With Men Young Enough to Be Their Sons.
26. Married People that Tint Their Car Windows Dark so that They Can Have Sexual Affairs with People they Meet at “Back to School” Night & at Work.
27. Mothers who Sexually Flirt with Their Teenage Son’s Friends.
28. Drunk or Mentally Unstable In-Laws who Offer to Give You Oral Sex “On The Side” at Family Get Togethers, while Your Children Are in the Other Room.
29. Old Slut Mother-in-Laws who Try to Undermine Your Marriage, so that Their children will End Up Divorced & As Miserable as Themselves.
30. Spouses who make a Game of Bringing Around Their Sleazy Lovers During the Holidays & Act Like Nothing is Wrong.
That Little Guy at Church with the Goatee Beard and Russian "Mail-Order Bride" "Half His Age" who "Hits On" Everyone is One Big Creep.
by Tina from the BGCA August 28, 2014
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When somebody does something that was on the low and wrong. Like if a guy were to try to take his best friends girlfriend he would be creep
by Ashanda June 2, 2007
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The act of sleeping with another person while already going out with/being married to someone
Yo I think my girl is doing something with someone else
Word, shes creeping.
by Lucci October 29, 2007
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A man whose socioeconomic status is lower than the woman who he wants to meet.
beautiful woman: that creep just asked me for my phone number! (points at awkward, socially inept man)
white knight: I'll take care of the problem (beats the snot out of the creep)
by iyhnALEX April 28, 2018
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When a car creeps forward on a red light, about to turn green.
That car infront of us is creeping!

Idiot, there's a left turn signal
by Spiesik February 9, 2020
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