Top Definition
Someone who tries to act mature but ends up making themselves seem retarded.
Guy#1: Hey guys i totally had my first blunt today. Now am I old enough for you?

Guy#2: Dude... stop acting so immaturd... your embarrassing yourself.
by ThatOneGuyiThink October 25, 2010
1 more definition
1 Word related to Immaturd
one is immature and appears at first glance to be a turd
Lindsey Lohan is a classic example of an immaturd
by bob the 3000th August 19, 2010

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