antithetical

[ an-tuh-thet-i-kuh l ]
/ ˌæn təˈθɛt ɪ kəl /

adjective

of the nature of or involving antithesis.
directly opposed or contrasted; opposite.
Also Archaic, an·ti·thet·ic.

Origin of antithetical

1575–85; antithetic (< Greek antithetikós, equivalent to anti(ti)thé(nai) to set in opposition + -tikos -tic) + -al1

Related forms

an·ti·thet·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for anti-thetical

antithetical

antithetic

/ (ˌæntɪˈθɛtɪkəl) /

adjective

of the nature of antithesis
directly contrasted
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012