antithetic
adj.
"containing an antithesis," c.1600, from Greek antithetikos "setting in opposition," from antithetos "placed in opposition," from antithesis (see antithesis).
〔李〕[anti-;thet;-ica.] a.对立的，对照的； 正相反的 ←thes, thet [GK tithenai]=to place or put 放置