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antithetical

[an-tuh-thet-i-kuh l]
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adjective
  1. of the nature of or involving antithesis.
  2. directly opposed or contrasted; opposite.
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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 formsan·ti·thet·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for antithetical

antithetical

antithetic

adjective
  1. of the nature of antithesis
  2. directly contrasted
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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

Word Origin and History for antithetical

adj.

1580s, from Greek antithetikos "setting in opposition," from antithetos "placed in opposition" (see antithetic) + -al (1). Related: Antithetically.

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Online Etymology Dictionary, © 2010 Douglas Harper