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1. Of words or propositions so related that both cannot be true and both cannot be false
   "'perfect' and 'imperfect' are contradictory terms"
    
2. That confounds, contradicts or confuses
   - confounding
    
3. In disagreement
   "contradictory attributes of unjust justice and loving vindictiveness"; "the figures are self-contradictory with our findings";
   - at odds, conflicting, self-contradictory
    
4. Unable for both to exist or be true at the same time
   - mutually exclusive

1. Two propositions are contradictories if both cannot be true (or both cannot be false) at the same time

Derived forms: contradictories

See also: antonymous, incompatible, inconsistent, unsupportive

Type of: logical relation

Encyclopedia: Contradictory