reason — English Dictionary

reason
Pronunciations (4)
  • /ˈɹiːzən/
  • [ˈɹʷɪi̯zən]
  • [ˈɹʷɪi̯zn̩]
  • ˈɹiːzən

Noun

  1. A cause: That which causes something: an efficient cause, a proximate cause.

    Usage
    • Countable
    • Uncountable
    Synonyms
    Examples

    The reason this tree fell is that it had rotted.

    There is a reason why so many should be symmetrical: The selective advantage in a symmetrical complex is enjoyed by all the subunits[…]

  2. A cause: A motive for an action or a determination.

    Usage
    • Countable
    • Uncountable
    Synonyms
    Examples

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

    The reason I robbed the bank was that I needed the money.

    More examples (3)

    If you don't give me a reason to go with you, I won't.

    This is the reason why he proposes to offer a libation, to atone for the abuse of the day by their diversions.

    Ralph Touchett, for reasons best known to himself, had seen fit to say that Gilbert Osmond was not a good fellow[…]

  3. 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.

    Usage
    • Countable
    • Uncountable
    Synonyms
    Examples
    More examples (1)

    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.

  4. A cause: A premise placed after its conclusion.

    Usage
    • Countable
    • Uncountable
    Synonyms
  5. Rational thinking (or the capacity for it); the cognitive faculties, collectively, of conception, judgment, deduction and intuition.

    Usage
    • Uncountable
    Examples

    Mankind should develop reason above all other virtues.

    The tremendous tragedy in which he had been involved - it was evident he was a fugitive from Weybridge - had driven him to the very verge of his reason.

    More examples (2)

    And the specific distinction between man and beast is now, strictly speaking, no longer reason (the lumen naturale of the human animal) but science[…]

    The [Isaac] Newton that emerges from the [unpublished] manuscripts is far from the popular image of a rational practitioner of cold and pure reason. The architect of modern science was himself not very modern. He was obsessed with alchemy.

  6. Something reasonable, in accordance with thought; justice.

    Usage
    • Countable
    • Obsolete
    • Uncountable
    Examples

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

  7. Ratio; proportion.

    Usage
    • Countable
    • Obsolete
    • Uncountable
    Examples
    More examples (1)

    [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. To deduce or come to a conclusion by being rational.

    Usage
    • Intransitive
    Examples

    "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. To perform a process of deduction or of induction, in order to convince or to confute; to argue.

    Usage
    • Intransitive
    Synonyms
    Examples
    More examples (2)

    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.

    “All right, Dad – I did follow you. But only because I was worried about you.” “Worried about me? I was worried about you! Hanging on to the roof of a speeding car! Are you nuts?” “It wasn’t moving when I climbed on to it,” reasoned the boy.

  3. To converse; to compare opinions.

    Usage
    • Intransitive
    • Obsolete
  4. To arrange and present the reasons for or against; to examine or discuss by arguments; to debate or discuss.

    Usage
    • Transitive or intransitive
    Examples

    I reasoned the matter with my friend.

    More examples (1)

    The talk was mainly between Aleck and Murdie, the others crowding eagerly about and putting in a word as they could. Murdie was reasoning good-humoredly, Aleck replying fiercely.

  5. To support with reasons, as a request.

    Usage
    • Rare
    • Transitive
  6. To persuade by reasoning or argument.

    Usage
    • Transitive
    Examples

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

    More examples (1)

    That she was not immediately ready, Emma did suspect to arise from the state of her nerves; she had not yet possessed the instrument long enough to touch it without emotion; she must reason herself into the power of performance; and Emma could not but pity such feelings, whatever their origin, and could not but resolve never to expose them to her neighbour again.

  7. To overcome or conquer by adducing reasons.

    Usage
    • Transitive
    • with-down
    Examples

    to reason down a passion

  8. To find by logical process; to explain or justify by reason or argument.

    Usage
    • Transitive
    • usually
    • with out
    Examples

    to reason out the causes of the librations of the moon

Noun

  1. A wall plate.

Noun

  1. a rational motive for a belief or action

    Broader terms
    Examples

    the reason that war was declared

    the grounds for their declaration

  2. an explanation of the cause of some phenomenon

    Broader terms
    Examples

    the reason a steady state was never reached was that the back pressure built up too slowly

  3. the capacity for rational thought or inference or discrimination

    Examples

    we are told that man is endowed with reason and capable of distinguishing good from evil

  4. the state of having good sense and sound judgment

    Broader terms
    Examples

    his rationality may have been impaired

    he had to rely less on reason than on rousing their emotions

  5. a justification for something existing or happening

    Synonyms
    Broader terms
    Examples

    he had no cause to complain

    they had good reason to rejoice

  6. a fact that logically justifies some premise or conclusion

    Broader terms
    Examples

    there is reason to believe he is lying

Verb

  1. decide by reasoning; draw or come to a conclusion

    Examples

    We reasoned that it was cheaper to rent than to buy a house

  2. present reasons and arguments

    Synonyms
  3. think logically

    Examples

    The children must learn to reason

Word forms
reasonsreasonsreasoningreasonedreasonedrasenraisenraysinraison

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