1. (adj)rational number, rational an integer or a fraction Synonyms: rational, rational number Antonyms: physical, irrational, nonintellectual, unreasoning, superstitious, blind, nonrational, reasonless
2. (adj)rational consistent with or based on or using reason Synonyms: intellectual, noetic Antonyms: nonrational, unreasoning, irrational, reasonless, nonintellectual, blind, physical, superstitious
3. (adj)intellectual, rational, noetic of or associated with or requiring the use of the mind Synonyms: intellectual, cerebral, rational, noetic Antonyms: nonrational, irrational, reasonless, unreasoning, physical, nonintellectual, blind, superstitious
4. (adj)rational capable of being expressed as a quotient of integers Synonyms: intellectual, noetic Antonyms: reasonless, physical, irrational, blind, nonrational, superstitious, nonintellectual, unreasoning
5. (adj)rational having its source in or being guided by the intellect (as distinguished from experience or emotion) Synonyms: intellectual, noetic Antonyms: irrational, superstitious, blind, unreasoning, nonrational, physical, reasonless, nonintellectual
Synonyms, Thesaurus & Antonyms of 'rational'
English Synonyms and Antonyms
1. rational Sagacious refers to a power of tracing the hidden or recondite by slight indications, as by instinct or intuition; it is not now applied to mere keenness of sense-perception. We do not call a hound Synonyms: sagacious, able, intelligent, perspicacious, sensible, acute, keen, quick of scent, sharp, apt, keen-sighted, quick-scented, sharp-witted, clear-sighted, keen-witted, rational, shrewd, discerning, judicious, sage, wise Antonyms: absurd, futile, obtuse, silly, sottish, undiscerning, dull, ignorant, senseless, simple, stupid, unintelligent, foolish, irrational
Synonyms for rational 
