Of, relating to, or marked by antithesis.(adjective)
Being in diametrical opposition. See Synonyms at opposite.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "antithetical" in a sentence
"The Greek puts in antithetical juxtaposition, OUR, and His OWN"
"Thus far, the data show a recurring rhetorical pattern in which vulnerable groups were identified as antithetical to the core values attributed by the host to himself, his audience, and the nation."
"Aaron Lazare, "Go Ahead Say You're Sorry" Psychology Today (Jan-Feb 1995) 22 notes that "the greatest impediment to apology is a pervasive cultural attitude that views apology as a weakness, an emotional expression antithetical to traditional American values of autonomy and independence.""