grim is someone, who is a sket.
It's usually a girl who loves boys and is always around them, she sucks dick and has sex and does lots of stuff with lots of different boys.
Just another way of saying a prostitue but even worse.
" That girl is such a grim man look at her, with all those boys, that fucking sket!"
by shauniqua January 21, 2006
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a sexually transmitted infection which can be caught and treated at Woo Woo's Whomporium, via massage.
Oh shit, I've got the grim! But Woo Woo's Whomporium is the most banging youth hostel I've ever hit!
by Madame Woo Woo July 10, 2008
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Grimming is the opposite of grooming. In which a minor "grooms" an adult.
Prisoner A: So what are you in for?
Prisoner B: For grimming a mentally unstable 21 year old
by GrimmerRumbl3 November 10, 2020
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A term that is typically used to define something that radiates hopelessness, or produces an aura of unfortunate circumstances to come.
"The future looked grim for the couple, as they drifted along in the lifeboat, with no food nor water to speak of."

"The desolate crater that was at some time too far back to remember, a thriving populace, only produced a feeling of dread, as he looked upon it's grim countenance".
by Grin Reaper March 24, 2003
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to look at someone with a dirty look; common term in 1990s Detroit, Michigan.
"I was walking down the street, and some girl was grimming me like she had some kind of attitude or something."
by J. Johnson February 27, 2004
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Something that is proper nasty, mainly used when talkin about girls or gashes
Menzies: "Cuz did u see that girl?"

Calum: "yeh man! proper grim!"

Menzies: "Innit rude boi"
by Chris Menzies June 06, 2006
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