Antithesis

Chamber's Etymological of the English Language · 1895 · p. 31

an-iith'e-sis, n. a figure in which thoughts or words are set in contrast; oppos i lion:—//. Antith eses, -sez. a>ij Antithetic, -al —adv. Antithetically. [Gr. anti, against, iithJmi, to place.]