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rational

ra·tion·al

rational

 
 
pronunciation:
rae sh nl
features:
Word Explorer
part of speech: adjective
definition 1: based on sound reasoning; sensible.
Deciding not to get married just yet was a rational choice for her.
 
synonyms:
sensible
antonyms:
absurd, arbitrary, illogical, irrational
similar words:
logical, reasonable, reasoning, sane, sound
definition 2: in control of one's mind; not insane or crazy.
He became so angry that he was no longer rational.
synonyms:
sane
antonyms:
irrational
similar words:
responsible, right, sober, sound
definition 3: able to think or think clearly and logically.
Humans are rational creatures.
similar words:
intellectual, logical
derivations: rationally (adv.), rationalness (n.)
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  mind