Define rational. rational synonyms, rational pronunciation, rational translation, English dictionary definition of rational. adj. 1. Having or exercising the ability to reason.
Definition of rational adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
Discover everything about the word "RATIONAL" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide.
agreeable to reason; reasonable; sensible: a rational plan for economic development. having or exercising reason, sound judgment, or good sense: a calm and rational negotiator. being in or characterized by full possession of one's reason; sane; lucid: The patient appeared perfectly rational. endowed with the faculty of reason: rational beings.
sensible or reasoned. Deciding to stay in during the ice storm was a rational choice. Fear of a spider known to be venomous is completely rational, but intense fear of harmless spiders is not. I know them to be rational people, capable of making sound and level-headed decisions.
