Reason

Noun

 * 1) a cause:
 * 2) That which causes something: an efficient cause, a proximate cause.
 * 3) A motive for an action or a determination.
 * 4) An excuse: a thought or a consideration offered in support of a determination or an opinion; that which is offered or accepted as an explanation.
 * 5)  rational thinking (or the capacity for it; the cognitive faculties, collectively, of conception, judgment, deduction and intuition;
 * 6)  something reasonable, in accordance with thought; justice.
 * 7)  due exercise of the reasoning faculty
 * 8)  ratio; proportion.

Verb

 * 1)  To exercise the rational faculty; to deduce inferences from premises; to perform the process of deduction or of induction; to ratiocinate; to reach conclusions by a systematic comparison of facts.
 * 2)  Hence: To carry on a process of deduction or of induction, in order to convince or to confute; to formulate and set forth propositions and the inferences from them; to argue.
 * 3)  To converse; to compare opinions.
 * 4)  To arrange and present the reasons for or against; to examine or discuss by arguments; to debate or discuss.
 * 5)  To support with reasons, as a request.
 * 6)  To persuade by reasoning or argument.
 * 7)  To overcome or conquer by adducing reasons.
 * 8)  To find by logical process; to explain or justify by reason or argument.

Adjectives for Reason

 * (general) sensible; valid; potent; indignant; individual; sufficient; sentimental; unshackled; imperceptible; legal;  intelligent;  physical; holy; sound; artistic; abundant; mere; naked; alleged; supposed; cogent; religious; punitive; exquisite; abstract; shattered; intangible; weighty; passive; mournful; root; indisputable; ostensible; aesthetic; public; human; satirical; unknown contradicting; inclusive; cold; improbable crying; philosophic; prosaic; irresistible calm; special; prudential; earthly; sovereign; obscure; honest; sharp; convincing; sententious; fundamental; liberal; impossible; precise; obvious; justifying; mysterious; firm; foremost; dawning; immense; powerful; nature; plain; unconscious; manly; hampering; insufficient; overwhelming; carnal; indefinable; inexplicable; righteous; cool; immortal; definite; odious; respectable; trivial; weightiest; evident; hollow; inscrutable; sober; apparent; occult; willful; eternal; bright; pure; practical; benevolent; painful; plausible; logical; absurd; conceivable; organic; pompous; ethnological; inexperienced; unselfish; patent; specious; ultimate; pressing; simple; palpable.

Verbs for Reason

 * (grounds, argument, etc.) adduce—; advance—; analyze—; assign— for; bolster—; cite—s; conceal—; convey—; cook up—; debate—; discern—; draw— from; elicit—; evidence—; feign—; omit—; outline—s; overstep—; summarize—; —explains; —looms; —motivates; —underlies.
 * (intellectual, faculty, common-sense, logic) appeal to—; base on—; derange—; employ —; evince—; impregnate with—; invoke—; supplant—; —crumbles; —determines; — dictates; —impels; —ordains; —prevails; —totters; —wanders; —yields to.

Adverbs for Reason
coherently; inconsistently; persuasively; solemnly; dialectically; deductively; logically; ridiculously; deviously; ineffectually; intelligently; circuitously; validly; sentimentally; cogently; prosaically; sententiously; plausibly; speciously.

Thesaurus
finding, finding-out, fitting, form ideas, foundation, gather, generalize, glean, go into, goal, good reason, good sense, gray matter, ground, grounds, guiding light, guiding star, handle, have conversations, head, headpiece, healthy mind, hold conference, horse sense, hypothesize, ideal, ideate, ignoratio elenchi, illumination, illustration, induce, induction, inductive reasoning, infer, inference, insight, inspiration, intellect, intellection, intellectual faculty, intellectualize, intelligence, intention, interpretation, investigate, issue, judgement, justifiability, justifiable, justification, justness, knock around, level head, levelheadedness, light, lodestar, logic, logical thought, logicality, logicalize, logicalness, logicize, lucid interval, lucidity, mainspring, marbles, material basis, matter, mens, mental balance, mental capacity, mental equilibrium, mental health, mental hygiene, mental poise, mentality, mind, motive, negotiate, normalcy, normality, normalness, nous, object, objective, occasion, on account of, outcome, owing to, palaver, parley, pass under review, percipience, perspicacity, persuade, philosophize, philosophy, plaidoyer, plain sense, plausibility, plea, plead with, pleading, point, power of reason, powwow, practical mind, practical wisdom, practicality, pretense, pretext, prevail upon, principle, proof, proper, pros, pros and cons, provide a rationale, psyche, purpose, put heads together, rap, ratio, ratiocination, rational, rational ground, rationale, rationalism, rationality, rationalization, rationalize, rationalizing, reason about, reason for, reason that, reason the point, reason why, reason with, reasonability, reasonable, reasonableness, reasoning, reasoning faculty, reckon, refer to, reflect, refutation, resolution, resolving, result, review, riddling, right, right mind, sake, sanemindedness, saneness, sanity, score, sense, senses, sensible, sensibleness, sift, simplification, sit down together, sit down with, smarts, sober senses, sober-mindedness, soberness, sobriety, solution, solving, sophistry, sorting out, sound mind, sound sense, soundness, soundness of mind, source, special pleading, specious reasoning, speculate, spring, stated cause, study, substance, sweet reason, syllogize, take as proved, take counsel, take up, take up with, talk, talk about, talk of, talk over, talking point, the big idea, the idea, the whatfor, the wherefore, the why, theorize, think, thresh out, treat, ulterior motive, underlying reason, understanding, unlocking, unraveling, unriddling, unscrambling, unspinning, untangling, untwisting, unweaving, upshot, urge, use reason, ventilate, vindication, vocation, warrant, wherefore, wholesomeness, why, whyfor, wit, work out, working, working-out, Vernunft, acceptable, accomplishment, account, admissibility, advise with, aim, air, allegorization, ambition, analyze, answer, antecedent, apologia, apology, apply reason, argument, argumentum, ascertainment, aspiration, balance, bargain, basis, because of, brain, brains, by reason of, by virtue of, calculate, call, call in, calling, canvass, case, cause, cerebrate, clarification, clearing up, cogitate, collect, collogue, comment upon, common sense, compare notes, conceive, conception, conceptualize, conclude, confer, confer with, cons, consider, consideration, consult, consult with, contact with reality, controvert, convince, cool head, coolheadedness, coolness, counsel, cracking, deal with, debate, decipherment, decoding, deduce, deduction, deductive reasoning, defence, deliberate, deliberate upon, demonstration, demythologization, denouement, derive, determinant, determination, discourse, discourse about, discourse of reason, discursive reason, discuss, discuss with, disentanglement, dissuade, draw a conclusion, draw an inference, due sense of, due to, editing, elenchus, elucidation, emendation, end, end result, enlightenment, entertain ideas, esprit, estimate, euhemerism, examine, exchange observations, exchange views, excuse, exegesis, exemplification, exercise the mind, explanation, explication, exposition, expounding, extract, fetch, figure out, find,

Etymology
From raisun: ( raison:), from  rationem:, an accusative of ratio:, from ratus:, past participle of reor:.

Synonyms

 * cause
 * rationale, motive
 * excuse

Derived terms

 * age of reason
 * everything happens for a reason
 * for some reason
 * for no good reason
 * for XYZ reason
 * in reason


 * instrumental reason
 * reasonability
 * reasonable
 * reasonableness
 * reasonist
 * reasonless


 * rhyme or reason
 * stand to reason
 * unreason
 * with reason
 * within reason

Derived terms

 * reasoner
 * reason out

Noun

 * Albanian:
 * Arabic: سبب
 * Armenian:
 * Chinese:
 * Mandarin: 原因, 理由
 * Croatian:
 * Czech:
 * Danish:
 * Dutch:, ,
 * Esperanto:
 * Estonian: põhjus, ajend
 * Finnish:, ,
 * French:, raison
 * German: ,
 * Greek:
 * Hindi: ,
 * Hungarian:


 * Irish:
 * Italian:, ,
 * Japanese: 理由, 訳
 * Korean: 이유 (理由)
 * Kurdish:
 * Norwegian:
 * Persian: دلیل, سبب
 * Polish: ,
 * Portuguese:
 * Romanian:, ,
 * Russian:, резон
 * Scottish Gaelic:
 * Spanish: ,
 * Swahili:
 * Swedish:, anledning
 * Telugu: కారణం (kaaraNam)
 * Urdu:


 * Albanian:
 * Arabic:
 * Catalan: raó
 * Chinese: 理致 (lǐzhì)
 * Croatian:
 * Czech:
 * Danish: fornuft
 * Dutch:
 * Finnish:
 * French:
 * German:, , ,
 * Greek: ,
 * Hungarian:


 * Italian:
 * Japanese: 思慮 (しりょ, shiryo)
 * Korean: 이성 (iseong)
 * Latin:
 * Norwegian: fornuft
 * Old French: ,
 * Persian: عقل
 * Polish:
 * Portuguese:
 * Romanian:
 * Russian:
 * Spanish:
 * Swedish:


 * Albanian:
 * Finnish: järkeily, järjen käyttö
 * Italian:


 * Spanish:
 * Swahili:

Verb

 * Albanian:
 * Catalan: raonar
 * Danish: ræsonnere, overveje
 * Dutch:


 * Finnish: ,
 * Italian:
 * Polish: rozumować
 * Russian: рассуждать (rassuždát’)


 * Albanian:
 * Danish: slutte
 * Dutch:
 * Finnish:


 * Italian: ,
 * Polish:
 * Russian: продумать (prodúmat’)