contradictory - definition, thesaurus and related words from WordNet-Online

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Adjective contradictory has 4 senses

contradictory - of words or propositions so related that both cannot be true and both cannot be false; "`perfect' and `imperfect' are contradictory terms"
Antonym: synonymous (indirect, via antonymous)
confounding, contradictory - that confounds or contradicts or confuses
Antonym: supportive (indirect, via unsupportive)
at odds, conflicting, contradictory, self-contradictory - in disagreement; "the figures are at odds with our findings"; "contradictory attributes of unjust justice and loving vindictiveness"- John Morley
Antonym: consistent (indirect, via inconsistent)
contradictory, mutually exclusive - unable to be both true at the same time
Antonym: compatible (indirect, via incompatible)

Noun contradictory has 1 sense

contradictory - two propositions are contradictories if both cannot be true (or both cannot be false) at the same time
--₁ is a kind of logical relation