- the faculty or power of acquiring intellectual knowledge, either by direct understanding of first principles or by argument.
- the power of intelligent and dispassionate thought, or of conduct influenced by such thought.
- Kantianism.the faculty by which the ideas of pure reason are created.
verb (used without object)
verb (used with object)
Origin of reason
Synonyms for reason
A similar charge of redundancy is made against the reason why, which is also a well-established idiom: The reason why the bill failed to pass was the defection of three key senators.
Related Words for within reasonfair, cheap, plausible, proper, humane, honest, sensible, justifiable, valid, rational, objective, impartial, acceptable, judicious, modest, understandable, legitimate, equitable, prudent, restrained
Word Origin for reason
early 14c., resunmen, "to question (someone)," also "to challenge," from Old French raisoner "speak, discuss; argue; address; speak to," from Late Latin rationare "to discourse," from ratio (see reason (n.)). Intransitive sense of "to think in a logical manner" is from 1590s; transitive sense of "employ reasoning (with someone)" is from 1847. Related: Reasoned; reasoning.
c.1200, "intellectual faculty that adopts actions to ends," also "statement in an argument, statement of explanation or justification," from Anglo-French resoun, Old French raison "course; matter; subject; language, speech; thought, opinion," from Latin rationem (nominative ratio) "reckoning, understanding, motive, cause," from ratus, past participle of reri "to reckon, think," from PIE root *re(i)- "to reason, count" (cf. Old English rædan "to advise; see read (v.)).
Meaning "sanity; degree of intelligence that distinguishes men from brutes" is recorded from late 13c. Sense of "grounds for action, motive, cause of an event" is from c.1300. Middle English sense of "meaning, signification" (early 14c.) is in the phrase rhyme or reason. Phrase it stands to reason is from 1630s. Age of Reason "the Enlightenment" is first recorded 1794, as the title of Tom Paine's book.
see in reason.
see by reason of; in reason; it stands to reason; listen to reason; lose one's mind (reason); rhyme or reason; see reason; stand to reason; with reason.