rational
WordReference English Thesaurus © 2025
Sense: Adjective: logical
Synonyms:
logical, reasonable Collocations, sensible Collocations, levelheaded, level-headed, prudent Collocations, circumspect, sound Collocations, judicious, cogent, reasoned, well-reasoned, well-grounded, coherent, right-minded
Antonyms:
unreasonable, rash Collocations, overzealous, absent-minded, brash Collocations, careless Collocations, hysterical, fuddled, incongruous, nervy, reckless Collocations, ill-thought
Sense: Adjective: thinking
Synonyms:
thinking Collocations, reasoning, intelligent Collocations, thoughtful Collocations, conscious Collocations, sentient, higher-brained, smart Collocations , clever Collocations, intellectual
Sense: Adjective: sane
Synonyms:
sane, lucid, clearheaded, clear-headed, compos mentis, all there , coherent, in your right mind, able to think clearly, of sound judgment, of sound judgement
Antonyms:
batty , bananas , bird-brained, nutty , manic, cranky Collocations, crazy Collocations, delirious, half-witted, not all there , loopy , crackers Collocations , round the bend