Top Definition
(Noun) An error resulting from a profound lack of judgement - usually on an amateur scale.
Fred: Yeah, I got ridiculously drunk and got with my ex-girlfriend last night.
Johnathon: You didn't! That's an amateur mistake!

Alex: Oh no - I left my graphical calculator in radians for all those questions!
Christopher: Oh dear - amateur mistake!
by mkoijn March 11, 2009
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.