1 definition by Chris inCO

Mansplain (verb): When a man attempts to explain something to a woman in an authoritative and condescending manner, even though what is being is explained is already understood by that woman as a result of her professional expertise and/or lived experiences, due to a sexist belief that a woman always needs to be told by man how something really works, or in an attempt to undermine the seriousness of sexist behavior and reinforce male authority.
As in, “He mansplained the pain of child birth as beautiful to my sister who had just given birth to her daughter.”

Or, “Most of the Urban Dictionary definitions for mansplain are clear attempts to mansplain away a sexist way of talking to women and sexism in general."
by Chris inCO October 22, 2017
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