Top Definition
Short for Urban Dictionary Junkie.Refers to someone who is either
1.Obsessed/hooked on adding in new words to the Urban Dictionary
2.Obsessed/hooked on looking up new words in the Urban Dictionary
3.Over-uses words found on the Urban Dictionary
Omg, She is SUCH a UD Junkie. Last night she spent six hours on there, and added twenty new words.She doesn't even speak english anymore.Its all UD
by UD JUNKIE May 31, 2010

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