Definition of "contradictory" adjective comparative more contradictory , superlative most contradictory
That is diametrically opposed to something . quotations examples
Quotations Schemes […] contradictory to common sense .
1715 January 24 (Gregorian calendar), Joseph Addison, “The Free-holder: No. 7. Thursday, January 13. ”, in The Works of the Right Honourable Joseph Addison, Esq; […], volume IV, London: […] Jacob Tonson, […], published 1721
noun plural contradictories
(logic) Either of a pair of propositions , that cannot both be true or both be false . quotations examples
Quotations If one proposition is the negation of another , it follows trivially from the definition that the two propositions are contradictories The converse does not hold . Two propositions can be contradictories without either being the negation of the other . For example : 3) John is more than six feet talland 4) John is either exactly six feet tall or else less than six feet tall are contradictories but neither is the negation of the other . Negation is one way , but not the only way , of forming a contradictory
2001, Mark Sainsbury, chapter 1, in Logical Forms — An Introduction to Philosophical Logic, 2nd edition, Blackwell Publishing, §4, page 20