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1.
shady shitty uncool and not something desired

"That fucker gave me a shardy bike"

"You're ripping me off!!! I won't take a shardy deal"
by Angelik July 30, 2008
 
2.
Someone who is desirable in every aspect, both physical features and personality; rejected at times by those who are unable to handle such magnitude of awesome.
OMG that chick looks hella Shardy!
by Merkyluv July 30, 2012