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Synonyms of rational in English:


  • 1 a rational approach
    logical, reasoned, sensible, reasonable, cogent, intelligent, judicious, shrewd, common-sense, commonsensical, sound, prudent;
    down-to-earth, practical, pragmatic
    [Antonyms] illogical
  • 2 she was not rational at the time of signing
    normal, balanced, grounded, lucid, coherent
    informal all there
    [Antonyms] insane
  • 3 humans are rational beings
    intelligent, thinking, reasoning;
    cerebral, logical, analytical
    formal ratiocinative
  • Definition of rational in:
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