Reason

//ˈɹiː.zən// name, noun, verb

Definitions

Proper Noun
  1. 1
    A surname.
Noun
  1. 1
    A cause:; That which causes something: an efficient cause, a proximate cause. countable, uncountable

    "The reason this tree fell is that it had rotted."

  2. 2
    A wall plate.
  3. 3
    the capacity for rational thought or inference or discrimination wordnet
  4. 4
    A cause:; A motive for an action or a determination. countable, uncountable

    "He made reason with his boss about taking a day off."

  5. 5
    a fact that logically justifies some premise or conclusion wordnet
Show 9 more definitions
  1. 6
    A cause:; 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. countable, uncountable

    "I have forgotten the reason he gave for not travelling by air. I felt sure that it was not the correct reason, and that he suffered from a heart trouble which he kept to himself."

  2. 7
    an explanation of the cause of some phenomenon wordnet
  3. 8
    A cause:; A premise placed after its conclusion. countable, uncountable
  4. 9
    a justification for something existing or happening wordnet
  5. 10
    Rational thinking (or the capacity for it); the cognitive faculties, collectively, of conception, judgment, deduction and intuition. uncountable

    "Mankind should develop reason above all other virtues."

  6. 11
    a rational motive for a belief or action wordnet
  7. 12
    Something reasonable, in accordance with thought; justice. countable, obsolete, uncountable

    "16th century Edmund Spenser, Lines on his Promised Pension I was promised, on a time, To have reason for my rhyme."

  8. 13
    the state of having good sense and sound judgment wordnet
  9. 14
    Ratio; proportion. countable, obsolete, uncountable

    "[I]f two Quantities repreſented by the Numbers 20 and 4 be compared, by dividing the Antecedent 20 by the Conſequent 4, the Quotient is 5; but inverting the Terms, by dividing 4 by 20 the Quotient is #92;tfrac#123;4#125;#123;20#125;#61;#92;tfrac#123;1#125;#123;5#125;. By which Quotients are declared the Geometrical Reaſons of the propoſed Quantities, becauſe if the Quotient found be multiplied by the Conſequent, the Product is equal to the Antecedent; for in the former Compariſon 5#92;times4#61;20, in the latter #92;tfrac#123;1#125;#123;5#125;#92;times20#61;4; as Things again are referred to Equality."

Verb
  1. 1
    To deduce or come to a conclusion by being rational. intransitive

    ""I had," said he, "come to an entirely erroneous conclusion which shows, my dear Watson, how dangerous it always is to reason from insufficient data. […]""

  2. 2
    think logically wordnet
  3. 3
    To perform a process of deduction or of induction, in order to convince or to confute; to argue. intransitive

    "Still my spirit was not broken. I indulged the anticipation of escape, and that speedily. It was impossible, I reasoned, that men could be so unjust as to detain me as a slave, when the truth of my case was known."

  4. 4
    decide by reasoning; draw or come to a conclusion wordnet
  5. 5
    To converse; to compare opinions. intransitive, obsolete
Show 6 more definitions
  1. 6
    present reasons and arguments wordnet
  2. 7
    To arrange and present the reasons for or against; to examine or discuss by arguments; to debate or discuss. ambitransitive

    "I reasoned the matter with my friend."

  3. 8
    To support with reasons, as a request. rare, transitive
  4. 9
    To persuade by reasoning or argument. transitive

    "to reason one into a belief; to reason one out of his plan"

  5. 10
    To overcome or conquer by adducing reasons. transitive, with-down

    "to reason down a passion"

  6. 11
    To find by logical process; to explain or justify by reason or argument. transitive, usually

    "to reason out the causes of the librations of the moon"

Etymology

Etymology 1

From Middle English resoun, reson, from Anglo-Norman raisun (Old French raison), from Latin ratiō, from ratus, past participle of reor (“reckon”), ultimately from Proto-Indo-European *h₂reh₁- (“to think”), reanalysed root of *h₂er- (“to put together”). Displaced native Middle English reden (found in compounds), from Old English rǣden (“condition, stipulation, calculation, direction”), from the same Proto-Indo-European source (compare West Frisian reden (“reason”), Dutch reden (“reason”)). Doublet of ration and ratio.

Etymology 2

From Middle English resoun, reson, from Anglo-Norman raisun (Old French raison), from Latin ratiō, from ratus, past participle of reor (“reckon”), ultimately from Proto-Indo-European *h₂reh₁- (“to think”), reanalysed root of *h₂er- (“to put together”). Displaced native Middle English reden (found in compounds), from Old English rǣden (“condition, stipulation, calculation, direction”), from the same Proto-Indo-European source (compare West Frisian reden (“reason”), Dutch reden (“reason”)). Doublet of ration and ratio.

Etymology 3

From Middle English reason, reson, resen, rasen, from Old English ræsn (“beam, rafter, ceiling, wall panel”), probably from Proto-West Germanic *raʀn (“house”), from Proto-Germanic *razną (“house, dwelling”), from Proto-Indo-European *h₁erh₁- (“to rest”).

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