WordWeb Online

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 or contradicts or confuses
   - confounding
    
3. In disagreement
   "contradictory attributes of unjust justice and loving vindictiveness"
   - at odds, conflicting, self-contradictory
    
4. Unable to be both 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, contradict, contradictorily, contradictoriness, incompatible, inconsistent, unsupportive

Type of: logical relation

Encyclopedia: Contradictory