from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Involving, of the nature of, or being a contradiction. See Synonyms at opposite.
  • adj. Given to contradicting.
  • n. Logic Either of two propositions related in such a way that it is impossible for both to be true or both to be false.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. That contradicts something, such as an argument.
  • adj. That is itself a contradiction.
  • adj. That is diametrically opposed to something.
  • adj. Mutually exclusive.
  • adj. Tending to contradict or oppose, contrarious
  • n. Any of a pair of propositions, that cannot both be true or both be false.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Affirming the contrary; implying a denial of what has been asserted; also, mutually contradicting; inconsistent.
  • adj. Opposing or opposed; repugnant.
  • n. A proposition or thing which denies or opposes another; contrariety.
  • n. propositions with the same terms, but opposed to each other both in quality and quantity.

from The Century Dictionary and Cyclopedia

  • Denying that something stated or approved is completely true; diametrically opposed.
  • Inconsistent; logically antagonistic; incapable of being true together (though both may be false).
  • Synonyms Contrary, Inconsistent, etc. See contrary.
  • n. pl. contradictories (-riz). A proposition of a pair inconsistent with each other, or each of which precisely denies or falsifies the other.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. in disagreement
  • adj. that confounds or contradicts or confuses
  • adj. unable to be both true at the same time
  • adj. of words or propositions so related that both cannot be true and both cannot be false
  • n. two propositions are contradictories if both cannot be true (or both cannot be false) at the same time


Sorry, no etymologies found.


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