A term used to describe someone who disregards other people in pursuit of their own self-interest. Usually includes the acts or act of lying, spreading mis-information, covering one's own ass at the expense of others, or employing other forms of bullshitting.
"The day I broke up with my girlfriend, my roomate told her she would have been better off with him instead of me. He's such a bastard.
by Truthtellerunc April 18, 2010

by x0racunx March 22, 2010

'fo shizzle my nizzle' is a bastardization of 'fo sheezy my neezy' which is a bastardization of 'for sure my nigga' which is a bastardization of 'i concur with you whole-heartedly, my african-american friend'
by deziree February 24, 2007

by niggakooch August 18, 2009

by Jai Alai March 15, 2008

Besides all the usual meanings, it has a meaning in engineering as well. A bastard is a type of coarse-toothed file.
Conversation in the stores.
"Hi, I need a file."
"A half-round bastard?"
"No, a little triangular fucker."
"Hi, I need a file."
"A half-round bastard?"
"No, a little triangular fucker."
by Croatalin December 20, 2013
