The Collaborative International Dictionary
Antithetic \An`ti*thet"ic\, Antithetical \An`ti*thet"ic*al\, a. Pertaining to antithesis, or opposition of words and sentiments; containing, or of the nature of, antithesis; contrasted.
Douglas Harper's Etymology Dictionary
"containing an antithesis," c.1600, from Greek antithetikos "setting in opposition," from antithetos "placed in opposition," from antithesis (see antithesis).
Wiktionary
a. 1 diametrically opposed 2 antithetical
WordNet
adj. sharply contrasted in character or purpose; "practices entirely antithetical to her professed beliefs"; "hope is antithetic to despair" [syn: antithetical]
Usage examples of "antithetic".
As a rule they go in pairs, in antithetic couples, every analysis being dichotomy, since the discernment of one path of abstraction determines in contrast, as a complementary remainder, the opposite path of direction.