antonymous

Definitions of antonymous
  1. adjective
    of words: having opposite meanings
    Synonyms:
    complementary
    of words or propositions so related that each is the negation of the other
    contradictory
    of words or propositions so related that both cannot be true and both cannot be false
    contrary
    of words or propositions so related that both cannot be true but both may be false
    contrastive, incompatible
    of words so related that one contrasts with the other
    converse
    of words so related that one reverses the relation denoted by the other
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    Antonyms:
    synonymous
    (of words) meaning the same or nearly the same
    similar
    (of words) expressing closely related meanings
    substitutable
    (of words) interchangeable in a given context without changing the import of the expression
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