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English definition of “rational”

rational

adjective     /ˈræʃənəl/
BASED ON FACTS based on facts and not affected by someone's emotions or imagination: a rational argument/debate/explanation Logic and reason
WITHOUT EMOTION able to make decisions based on facts and not be influenced by your emotions or imagination: Look, we've got to try to be rational about this. → Opposite irrationalLogic and reason
rationally adverb
(Definition of rational adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

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