Synonyms of rational in English:

rational


See definition of rational

adjective

1‘a rational approach to the problem’

SYNONYMS

logical, reasoned, well reasoned, sensible, reasonable, cogent, coherent, intelligent, wise, judicious, sagacious, astute, shrewd, perceptive, enlightened, clear-eyed, clear-sighted, commonsensical, common-sense, well advised, well grounded, sound, sober, prudent, circumspect, politic

down-to-earth, practical, pragmatic, matter-of-fact, hard-headed, with both one's feet on the ground, unidealistic

informal joined-up

ANTONYMS

irrational, illogical

2‘she was not fully rational at the time of signing the agreement’

SYNONYMS

lucid, coherent, sane, in one's right mind, able to reason clearly, able to think clearly, of sound mind, in possession of all one's faculties

normal, balanced, well balanced, clear-headed

compos mentis

informal all there

ANTONYMS

insane

3‘man is a self-conscious, rational being’

SYNONYMS

intelligent, thinking, discriminating, reasoning

cognitive, mental, cerebral, logical, analytical, conceptual

rare ratiocinative