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1 definition by Handmaid

 
1.
to delighting in condescending, inaccurate explanations delivered with rock solid confidence of rightness and that slimy certainty that of course he is right, because he is the man in this conversation
Even though he knew she had an advanced degree in neuroscience, he felt the need to mansplain "there are molecules in the brain called neurotransmitters"
by Handmaid February 05, 2010