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Someone who is continually and repeatedly late or virtually never on time. Plays on the fact that there is an element of stupidity in frequently being late or "tardy" all the time.
John is retardy. I can't believe it! That's been everyday this week that he's been late for class.
by theManiac August 08, 2007
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I. the act of being tardy on more than one occasion

II. retarded
I. Attention all, Bill is still sick, he is going to be re-tardy for work today.

II. Are you re-tardy?
by oakaro68 October 19, 2009
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