overthwartnessEtymologyFrom Middle English overþwartnes, overthwartnes; equivalent to overthwart + -ness.overthwartness means the state of being overthwart; perverseness. Lexicurio rates it Sui generis — a strength score of 87 out of 100.nounThe state of being overthwart; perverseness.“c. 1624-1648 (written) 1764 (first published), Edward Herbert, 1st Baron Herbert of Cherbury, The Life of Edward Lord Herbert of Cherbury my younger sister , indeed , might have been married to a far greater fortune , had not the overthwartness of some neighbours interrupted it”