A descriptor used for something deemed gross, or to have dirt on it. Can also be a synonym for said thing that is dirtying up another thing.
"You've got greb on your face."
"I dropped my food and now it's all grebby."
"He grebbed up my phone with his grebby hands."
by nicetanuki September 1, 2023
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Someone that smells so bad that even the cleaning products run away.
by GreggsLasagna October 31, 2021
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Luke Pearce could be the best greb ever.

I will die alone because i will never find a 3D greb.

Mou: give me a btggf.
Syr: no.
Mou: i need a gf.
Syr: only if you find me a greb.
by Kuusanagy May 18, 2022
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An individual who does something unpleasant. A combination of the words grim and grubby, this word can be used to describe an action or a person who just gets on your nerves.
“Ew, look at that greb ordering a Filet-o-fish.”
by Trippygreb November 1, 2023
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I was sat in my baggy joggers having kfc and wkd for breakfast - I am a greb.
Can be used as an insult “ he is such a greb

or a jokey compliment between friends “ haha I’m such a greb”
“ ew they are some grebby joggers”
by Melody MH October 25, 2019
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Greb is an adjective. It describes someone who is a waster or doesn't look after themselves. For example someone who takes lots of drugs, doesn't work and doesn't take on any responsibilities. (Basically just a crack head)
Tabby - "God Tracy is such a dosser. She does nothing!"
Lilly - "I know right, what a greb!"
by AriaScarlettRose January 17, 2021
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you went to say green and had a mental blank and now your saying greb
person 1: i really like the color greb
person 2: what
person 1: i mean green
by JonesyJ12 August 25, 2022
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