- 1(of behavior, ideas, etc.) based on reason rather than emotions a rational argument/choice/decision rational analysis/thought There is no rational explanation for his actions.
- 2(of a person) able to think clearly and make decisions based on reason rather than emotions synonym reasonable No rational person would ever behave like that. opposite irrational
adjectivejump to other results
rationalityjump to other results
NAmE//ˌræʃəˈnælət̮i//noun [uncountable] the rationality of his argument
rationallyjump to other results
NAmE//ˈræʃənəli//adverb to act/behave/think rationally She argued her case calmly and rationally.