[noun] two propositions are contradictories if both cannot be true (or both cannot be false) at the same time
[adjective] of words or propositions so related that both cannot be true and both cannot be false; "`perfect' and `imperfect' are contradictory terms"
[adjective] that confounds or contradicts or confuses Synonyms:confounding
[adjective] in disagreement; "the figures are at odds with our findings"; "contradictory attributes of unjust justice and loving vindictiveness"- John Morley Synonyms:at odds, conflicting, self-
[adjective] unable to be both true at the same time Synonyms:mutually exclusive
