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"Grean," a slang term widely used in Thailand, refers to a person who acts like a bastard or to the act of bastardization in the internet and cyber-world. "Greans" don't have the awareness of a usual person, and do many things without thinking.

"Greans" can be referred to as a noob or newbie, but are worse than them. "Greans" can cause chaos in many games, online-societies and forums. They act like they know everything, in spite of the fact that they often don't know anything.

The term "Grean" was initially created as a slang word by someone in the forum of the Pramool site, the most nation-wide website of Thailand, and was always used in the Ragnarok society, The most renowned online game in Eastern Asia. Started by a group of children who had the crew-cut hair style, and they were always insulting anyone who passed in their sight, mostly young children. When this slang word was used so many times, people consequently referred to people who behaved in this manner as "Greans." "Greans" are now present in many forums and sites.

However, the group of "Greans" suddenly get angry when they are called "Greans," because of the term's connotation. "Greans" also consider themselves as the center of correctness, which is rather removed from reality, so they created the other slang word "God" to refer to themselves as a professional or pr0. This word can also be seen in many forums and sites, like "Grean."

=The Characteristics Of Greans-
*They have high self-confidence, which generates their imagination of correctness.
*They have low EQ, and they always use their temper to decide what to do, and they're very sensitive.
*They don't have control over their tempers so they always show what they feel by saying or posting without thinking and manners in the forums.
*They like to start problems and raise topics which cause arguments.
*They live in a group.
1.Thomas has just had a new Grean haircut, he looks cool!
2.He's so Grean!, he doesn't even know how to micro his hands
grean by Thai-StyleZ December 14, 2008
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The combination of a groan and bloat.
"Ethan, guess what?"
"What?"
"Daniel Keaton uploaded another gorging vid!"
"How many times did he GROAT?"
"37."
The onomatopoeia ending of Heaven and Hell by Ye (formerly kanye west)
Kanye: Grrat Grrat Grrat LET IT GRRAT

Random dude: not now Kanye this is my mothers funeral
grrat by jackoncrack13 December 2, 2021

anti-grat 

Pronounced: anti-grash

noun: Someone who is the "voice of reason", one who always knows what they are talking about, someone witty, funny, sharp and intelligent
Mr. Reed is the anti-grat because he knows everything about chem and shuts down all the idiots who ask stupid questions.
anti-grat by The Anti Grat November 19, 2006
a very intelligent funny athletic girl who is easily sidetracked. ta person with this name would be very energetic.others would think she is high but she is easy to love.not easy to offend.
"you look like a Greta today."
Greta by emily shalings March 5, 2010

meet and greet 

Business jargon for a function before a professional meeting, seminar, convention or conference where you go to meet people in your field to network and get laid.
The National Protological Association annuall convention's meet and greet was a success. I met with the heads of 5 manufactures, 4 resellers, 2 financiers, and 3 cocktail waitresses.
Gretas tend to have blonde hair with blue eyes. She is drop dead gorgeous and attracts people of both genders. She is a genuine girl with the sweetest heart. All she wants is to make the world a better place. If she sees someone upset, she will make sure to go cheer them up without a doubt. She is usually somewhat nerdy (book wise) and values alone time (only sometimes, usually she will want to be with her friends as well). Gretas are typically short but don’t mind it. She loves affection and hugs. She is a huge animal and nature lover, but her all time favorite animals are cats and horses. She loves helping people from the goodness of her heart and cares about others more than herself. We love you Gretas, thanks for being out there you beautiful select few!
Jamie: Wow, did you see Greta walk by?
Austyn: Yeah! She seemed to be going somewhere... Where do you think she might be going?
Jamie: Probably to go horseback riding or to a coffee shop!

Austyn: I wouldn’t be surprised, haha!
Greta by raymondhater September 9, 2018