The story
Blend of man + explaining, or from mansplain + -ing.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: The act of condescendingly explaining something, particularly by a man to a woman, in order to appear knowledgeable, or from a mistaken presumption that she has an inferior understanding of the topic. Full definition →
Blend of man + explaining, or from mansplain + -ing.
Etymology from Wiktionary, CC BY-SA 4.0.