Adjective specious has 3 senses
  1. specious, spurious - plausible but false; "specious reasoning"; "the spurious inferences from obsolescent notions of causality"- Ethel Albert
    Antonym: valid (indirect, via invalid)
  2. specious - plausible but false; "a specious claim"
    Antonym:
    true (indirect, via false)
  3. gilded, meretricious, specious - based on pretense; deceptively pleasing; "the gilded and perfumed but inwardly rotten nobility"; "meretricious praise"; "a meretricious argument"
    Antonym: sincere (indirect, via insincere)
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