1 definition by Derpyhoovs

Top Definition
To be inefficient, slow, unable, inexperienced, not working correctly, stupid, naive, etc. A word that usually takes the place of "retarded."

Can be pertaining to a person or a thing.
I tried to send my essay in via email last night, but my computer was being derpy.

*Friend trips and falls over own feet
You are so derpy sometimes
by Derpyhoovs July 27, 2011
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