研究社 新英和中辞典

reason

音節rea・son 発音記号/ríːzn/

【名詞】

1 【不可算名詞】 [具体的には 【可算名詞】]

a 理由，わけ; 動機 《★【類語】 ⇒cause》.

用例

for economical reasons 経済的理由で, 節約のために. for some reason (or other) ある理由で, どうしたわけか. He struck me without [for no] reason. 彼はわけもなく私を殴った. For what reason? どういう理由で, なぜ.

b 〔…の〕理由，わけ 〔for〕.

用例

What is the reason for his absence? 彼の欠席した理由は何ですか. He gave a good reason for it. 彼はそれの正当な理由を述べた. The reason for the decision is to get money. そう決心した理由は金を手に入れるためだ. She had her own reasons for coming here. ここへ来たのには彼女なりの理由がある.

c 〔+to do〕〈…する〉理由.

用例

There's reason to believe that he is dishonest. 彼が不正直だと信じるもっともなわけがある. He has every reason to complain. 彼には苦情を言うだけの十分な理由がある, 不平を言っても当然だ.

d 〔+that〕〈…という〉理由 《★【用法】 that が略されることもある》.

用例

The meeting was put off for the reason that the chairman was ill. 会議は議長が病気だという理由で延期となった. The reason (that) I'm studying so hard is that [because] I have an exam tomorrow. こんなに一生懸命勉強しているのはあした試験があるからだ 《★【用法】 because を用いるのは 《口語》》. The reason I came here is to meet you. 私がここへ来たのは君に会うためだ.

e 〔+why〕〈なぜ…かという〉理由.

用例

There're various reasons why that won't be possible. なぜそれができないかという理由はいろいろある. I see no reason why they should not make a happy couple. なぜあの二人が幸福な夫婦になれないのか理由がわからない. This [That] is the reason (why) you failed. これ[それ]がなぜ君が失敗したかという理由だ 《★【用法】 This [That] is why … となるか why を略すこともしばしばある; ⇒why B2 【用法】》.

2 【不可算名詞】 道理，理屈.

用例

bring a person to reason 人に道理を悟らせる, 人を聞き分けさせる. listen to [hear] reason 道理に従う; 人の言うことを聞き分ける. speak reason もっともなことを言う. There's reason in what you say. 君の言うことにも一理ある.

3 【不可算名詞】

a 理性，思考力，判断力; 分別，良識.

用例

lose all reason 理性を失う; 非論理的になる. Animals do not have reason. 動物には理性がない. His reason failed him. 彼の理性は役に立たなかった.

b [しばしば one's reason] 正気.

用例

lose one's reason 気が狂う. regain one's reason＝be restored to reason 正気に返る.

名詞としての「reason」のイディオムやフレーズ

beyònd (áll) réason	by réason of…
for óne réason or anóther	for réasons bést knówn to onesélf
in réason	It stánds to réason that…
pàst (áll) réason	rhýme or réason
sée réason	withìn réason
with réason

【動詞】 【自動詞】

1 a 論理的に考える，推論する.

用例

Human beings have the ability to reason. 人間には論理的に考える力がある.

b 〔+前+(代)名〕〔…から〕推論する 〔from〕; 〔…について〕推理する 〔about，on，upon〕.

用例

You are reasoning (about it) from the wrong premises. あなたは(そのことについて)誤った前提に立って推論しています.

2 〔+前+(代)名〕〔人を〕〔…について〕説きつける 〔with〕 〔about〕.

用例

I reasoned with her about the dangers of going alone. 彼女にひとりで行くことが危険であることを納得させた.

【他動詞】

1 a 〈…を〉(論理的に)論じる; 論証する，論断する.

用例

The argument is well reasoned. その議論は理路整然としている.

b 〔+(that)〕〈…だと〉推論する，論断する.

用例

I reasoned that this would be the best way for us to proceed. 私はこれが我々の取るべき最善の道だと説いた.

2 〔+目+前+(代)名〕〈人を〉説きつけて〔…〕させる 〔into〕; 〈人を〉説きつけて〔…を〕やめさせる 〔out of〕.

用例

They tried to reason me into accepting the offer. 彼らは私を説き伏せてその申し出を受け入れさせようとした. Nobody can reason him out of his obstinacy. 彼によく言い聞かせて偏屈さを取り除くことはだれにもできない.

他動詞としての「reason」のイディオムやフレーズ

Óurs (is) nòt to réason whý.

réason óut

reasoner 【名詞】

［ラテン語「考えること，計算」の意］

斎藤和英大辞典

reason

推理；理窟；物心；正気；法；所以；筋道；訳；筈；筋；由；推論；理由；説得；次第；諫め；謂れ；推考；理；性根；道筋；思案；説諭；諭す；説く

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Reason

事由；筋合；正理；道理；理；条理；故；理性

コンピューター用語辞典

reason

【名詞】

理由

JST科学技術用語日英対訳辞書

reason

根拠; 筋目; 訳; 動機; 理屈; 所以; 筋合い; 筋道; 道筋; 都合; 事由; 子細; 理由; 仔細; リーズン; 事理; 道理; 事情; 条理

ライフサイエンス辞書

reason

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理由, 根拠, わけ, 判断する, 考える

関連語

account, assume, bases, basis, because, cause, consider, decision, evidence, foundation, ground, interpretive, judge, judgement, judgment, read, regard, since, think

用例

reason for [〜の理由]

The underlying reason for this heterogeneity remains a mystery. (Mol Cell Biol)

The reasons for such a failure mode are identified and an alternative tensile bond strength test evaluated. (J Dent Res)

Cerebellar Purkinje cells are selectively vulnerable to ischemia, although the reasons for this are unknown. (J Neurosci)

We demonstrate here two reasons for that sensitivity. (Dev Biol)

reason why [〜である理由]

This study provides further reasons why preascitic patients with cirrhosis might benefit from sodium restriction. (Gastroenterology)

This appears to be the main reason why aged subjects have more difficulty in achieving automaticity. (J Physiol)

Nevertheless, there are two important reasons why the size of a constructed network should be limited. (Bioinformatics)

reason to do [〜する理由]

However, there are many reasons to suggest that these rhythms are more closely related than previously thought. (Circ Res)

There is no reason to suppose that the visual system contains motion sensors dedicated to the analysis of second-order motion. (Annu Rev Psychol)

There are four major reasons to perform SLN biopsy. (J Clin Oncol)

When rules are ambiguous, people look for reasons to guide their decisions. (Annu Rev Psychol)

for this reason [この理由のために]

For this reason, comparative studies and developmental studies are the best way of gaining insight into the evolutionary process. (Curr Opin Neurobiol)

For this reason, we have designated lipoprotein-9 GmpC, for glycylmethionine binding protein. (Biochemistry)

for these reason [これらの理由で]

For these reasons, we hypothesized that reduced levels of EGR1 would correlate with inferior outcome in patients with NSCLC. (J Clin Oncol)

For these reasons, the Hedgehog pathway has attracted considerable interest. (Genetics)

for a variety of reasons [種々の理由で]

The implementation of tamoxifen for this indication has not become widespread in clinical practice, however, for a variety of reasons that we discuss. (J Clin Oncol)

The quality of the epidemiological data on diabetic neuropathies remains poor for a variety of reasons. (Diabetes)

for the following reasons [以下の理由で]

Co-immunoprecipitation of IP3R isoforms was not due to cross-reactivity of the antibodies for the following reasons. (J Biol Chem)

The second procedure was performed for the following reasons: (1) elective double procedure in four patients, (2) relapse after first transplant in 20, (3) partial remission (PR) after first transplant in eight, and (4) refractory disease after first transplant in two. (J Clin Oncol)

reasonの共起表現

日本語WordNet(英和)

reason

【動詞】

1

論理的に考える

(think logically)

The children must learn to reason 子供たちは、推論することを学ばなければならない

2

推論によって決定する

(decide by reasoning)

We reasoned that it was cheaper to rent than to buy a house 私たちは、家を借りるほうが買うより安いと判断した

3

理由と論拠を提示する

(present reasons and arguments)

【名詞】

1

合理的思考、推理、あるいは識別の能力

(the capacity for rational thought or inference or discrimination)

we are told that man is endowed with reason and capable of distinguishing good from evil 人間には理性が授けられ、善と悪を区別できると教えられる

2

論理上ある前提あるいは結論を正当化する事実

(a fact that logically justifies some premise or conclusion)

there is reason to believe he is lying 彼が嘘をついていると思う道理がある

3

ある現象の原因の説明

(an explanation of the cause of some phenomenon)

the reason a steady state was never reached was that the back pressure built up too slowly 定常状態に決して到達しなかった理由は、背圧があまりにゆっくり積み重なったからであった

4

存在している、または起こっている何かを正当化する理由

(a justification for something existing or happening)

they had good reason to rejoice 彼らには、歓喜するもっともな理由があった

5

信念または行動の合理的な動機

(a rational motive for a belief or action)

the reason that war was declared 宣戦布告がなされた理由

6

分別があり的確な判断ができること

(the state of having good sense and sound judgment)

he had to rely less on reason than on rousing their emotions 彼は情緒をかき乱すことよりも理性に訴えなくてはならない

>>「reason」に関する類語一覧

EDR日英対訳辞書

reason

きっかけ；理由づける；論拠；直路；切っ掛け；縁故；なじかは；判断力；理由付ける；作用因；原因；動因；取掛かり；取掛り；節理；世理；趣旨；故；素因；理性；導因；取っ掛り

日英・英日専門用語辞書

reason

理性

Weblio英語表現辞典

reason

訳語 理由に；せい

Weblio英和対訳辞書

reason

一義, 由来, 所以, 理り, 理, 訳柄, 前提, 筋道, 事理, 訳, 筋合, 筋合い, 由, 理由, 途方, 節理, 故, 理性, 事由, 筋目, 道理, リーズン, 由縁, 理, 訳合い, 原由, 筋, 条, 謂れ, 謂われ, 所為, 条理, 一理, 理屈, 理窟

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reason

結論づける, 結論付ける, 説き聞かせる

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reason

推論する, 推理する

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reason

推論; 理由; 説き聞かせる

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Reason (Nami Tamaki song)

Reason (玉置成実の曲)

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Reason (software)

Reason (ソフトウェア)

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Reason (ソフトウェア)

Reason (software)

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Reason (玉置成実の曲)

Reason (Nami Tamaki song)

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Wiktionary英語版

reason

出典:『Wiktionary』 (2012/05/08 17:45 UTC 版)

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.

	A user suggests that this entry be cleaned up, giving the reason: “get rid of the cause subdivision. Can’t we remove the webster tag by now? Split up derived terms and translation sections”.
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語源

From Anglo-Norman raisun (Old French raison), from Latin rationem, an accusative of ratio, from ratus, past participle of reor (“think”).

発音

• IPA: /ˈɹiːzən/, X-SAMPA: /"r\i:z@n/
• 韻: -iːzən
• ハイフネーション: rea‧son

名詞

reason (複数形 reasons)

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

      The reason this tree fell is that it had rotted.

      Unless you have a good reason for being here, I suggest you leave now.

      • 1996, Daniel Clement Dennett, Darwin’s Dangerous Idea: Evolution and the Meanings of Life, page 198,

        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 motive for an action or a determination.

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

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

      • 1806, Anonymous, Select Notes to Book XXI, in, Alexander Pope, translator, The Odyssey of Homer, volume 6, London, F.J. du Roveray, page 37,

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

      • 1881, Henry James, The Portrait of a Lady, chapter 10,

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

   3. 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.
      • 1966, Graham Greene, The Comedians, Penguin Classics edition, ISBN 0140184945, page 14,

        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. (Can we verify⁽⁺⁾ this sense?) proof, more or less decisive, for an opinion or a conclusion
2. (uncountable) rational thinking (or the capacity for it; the cognitive faculties, collectively, of conception, judgment, deduction and intuition; (roughly)

   Mankind should develop reason above all other virtues.

   • 1970, Hannah Arendt, On Violence, ISBN 0156695006, page 62,

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

3. (obsolete) something reasonable, in accordance with thought; justice.
   • (Can we date this quote?) Edmund Spenser

     I was promised, on a time, To have reason for my rhyme.

4. (Can we verify⁽⁺⁾ this sense?) (obsolete) due exercise of the reasoning faculty
5. (mathematics, obsolete) ratio; proportion.

同意語

• (that which causes): cause
• (motive for an action): rationale, motive
• (thought offered in support): excuse

派生語

Terms derived from the noun reason

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

instrumental reason reasonability reasonable reasonableness reasonist reasonless

rhyme or reason stand to reason unreason with reason within reason

動詞

reason (三人称単数 現在形 reasons, 現在分詞 reasoning, 過去形および過去分詞形 reasoned)

1. (intransitive) 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. (intransitive) 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. (intransitive) To converse; to compare opinions.
4. (transitive) To arrange and present the reasons for or against; to examine or discuss by arguments; to debate or discuss.

   I reasoned the matter with my friend.

5. (transitive, まれに) To support with reasons, as a request.
6. (transitive) To persuade by reasoning or argument.

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

7. (transitive, with down) To overcome or conquer by adducing reasons.

   to reason down a passion

8. (transitive, usually with out) To find by logical process; to explain or justify by reason or argument.

   to reason out the causes of the librations of the moon

派生語

Terms derived from the verb “reason”

reasoner reason out

統計情報

• Most common English words before 1923: John · hour · air · #368: reason · feel · behind · sn

外部リンク

• reason in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
• reason in The Century Dictionary, The Century Co., New York, 1911