antithesis
n.
1520s, from Late Latin antithesis, from Greek antithesis "opposition, resistance," literally "a placing against," also a term in logic and rhetoric, noun of action from antitithenai "to set against, oppose," a term in logic, from anti- "against" (see anti-) + tithenai "to put, place" (see theme).
〔李〕[anti-;thes;-isn.] n. [修辞学]对语,对句; 对照,对立 ←thes, thet [GK tithenai]=to place or put 放置