a group of filmmakers who make performance-based films that focus on the everyday problems, often about relationships, of middle-class twentysomethings.
"I just wasted 2 hours of my life watching the mumblecore film, Mutual Appreciation."

by robottt July 23, 2007
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A genre of independent films in which the characters are involved in a personal crisis. Known for their realistic point of veiw, these movies are the eyes of the just-out-of-college generation.
Billy: Hey Sally, have you seen Mutual Appreciation yet?
Sally: Uhm...I've never even heard of that...
Billy: It's totally mumblecore, you'll love it.
by hudgoesplatt92 May 22, 2008
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