1 definition by Bumpalicious

Top Definition
A person, usually an acquaintance, who you find completely detestable. The mere mention of their name is enough to fill you with a feeling of dread, while an encounter with this person inevitably leaves a cloud of misery hanging over an otherwise pleasant day. This term is derived from a common reference to Lord Voldemort from J.K. Rowling's Harry Potter series.
"I bumped into You-Know-Who the other day...that basically ruined my week."
by Bumpalicious February 06, 2010
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