1 definition by Y0uRm0M143920

Top Definition
A Riley is a person who can't make up their own style and has no personality. They talk about other people behind their back and are at heart mean. Having a bad reputation for asking out almost every guy in the grade, she is an annoying person who can't be original. Another word for a BIG nerd.
"Oh my god! Your embarassing me, your acting like a real big Riley right now. STOP IT!"
by Y0uRm0M143920 March 28, 2008

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