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Very rough Japanese for "yay." It can also be used to express (good) surprise.
Commonly used among otaku.
Shuichi-chan!! WAI!!!!!
WAI, SHINY THINGS!!!
by Sage Knight April 15, 2004
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A remarkably intelligent female student with a low idiot tolerance. Nevertheless, Wais often have random sides. They are renowned for their steadfast loyalty and frank advice.
"I just started a food fight in the cafeteria. I don't know whether or not I should ask Wai for help. Either she'll defend me with a tray or tell me I'm an idiot for starting a food fight."
by i can haz more haxorz pl0x? April 13, 2009
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5
An extremely short,paranoid, funny and slightly vain. Believes all the chicks like him..okay. Loves to be center of attention at times interesting yet annoying.
that's extremely Wais of you.
by The person that witnessed January 12, 2012
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a. my friend heather sent me a picture, it says "Wai: Hawaiian for water."

b. it was a very popular name for kids that were born in the late 70's and early 80's in Hong Kong. who knows, it might still be popular??
aloha, this is my friend Wai from Hong Kong, she likes to drink wai.
by C-Joy1234 February 28, 2009
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A cartoonish way of screaming. An outburst. Usually used when you saw something kawaii or when you've been introduced.
Girl: This is my friend, Alice.
Alice: WAI!!! Nice to meet ya!

*looks at a puppy*
WAI!!! That is so adorable!
by BlackTwilight October 06, 2003
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