https://www.macquariedictionary.com.au/resources/view/word/of/the/year/

mansplain
verb (t) Colloquial (humorous) (of a man) to explain (something) to a woman, in a way that is patronising because it assumes that a woman will be ignorant of the subject matter.
[MAN + (EX)PLAIN with s inserted to create a pronunciation link with explain]
–mansplaining, noun

The Committee chose mansplain as the word of the year for 2014. They felt that it was a much needed word and it was a clever coinage which captured neatly the concept of the patronising explanation offered only too frequently by some men to women.