1 definition by monkmunk

The female protagonist of a story.

(Archaic) A female character, usually an authorial self-insert in a fan fiction, that is annoyingly perfect. Often unique in some implausible way, any problems they face are typically intended to make them seem tragic or emotionally deep, rather than complex or flawed.
"I can't believe you like that, the main character is such a mary sue."
by monkmunk April 11, 2015
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