reason

理由、原因

出来事が起こるわけや、人が何かをするわけ。

やさしい英語で： Something that explains why an event happens or why someone does something.

• What is the reason?
• She gave no reason for leaving.
• There are several reasons why the flight was delayed.

使い方： a reason for something/doing something (What was your reason for leaving?); a reason to do something (We have a good reason to celebrate.); the reason why + clause (That is the reason why I called.)

類義語： cause, explanation, motive

よく使う表現： a good reason, reason for something, reason to leave, reason to act

理性、判断力

物事を筋道立てて考え、事実を理解し、適切に判断する力。

やさしい英語で： The ability to think clearly, understand facts, and make sensible judgments.

• Use reason to decide.
• Fear can overcome reason.
• She appealed to his reason instead of his emotions.

類義語： rationality, logic

反対語： irrationality

よく使う表現： use reason, listen to reason, human reason, the power of reason

推論する、筋道を立てて考える

事実や考えを筋道立てて検討し、結論を出す。

やさしい英語で： To think carefully about facts or ideas in order to reach a conclusion.

• Try to reason calmly.
• She reasoned that the shop would still be open.
• We reasoned from the evidence to find the most likely explanation.

使い方： reason that + clause (I reasoned that he must have missed the bus.); reason from something (We can reason from the facts we already know.)

類義語： think, deduce, infer

よく使う表現： reason logically, reason that something, reason from evidence

説得する

筋の通った説明や理由を示して、相手を納得させる。

やさしい英語で： To persuade someone by giving sensible explanations or arguments.

• Try to reason with him.
• She reasoned me into taking a break.
• We could not reason him out of leaving.

使い方： reason with someone (I tried to reason with the angry driver.); reason someone into doing something (She reasoned him into accepting the offer.); reason someone out of doing something (We reasoned her out of selling the house.)

類義語： persuade, convince

よく使う表現： reason with someone, reason someone into something, reason someone out

理屈で抑える、論破する

筋の通った理由によって、感情や信念を抑えたり、反論を退けたりする。

やさしい英語で： To defeat a feeling, belief, or objection by using logical arguments.

• She tried to reason down her anger.
• He reasoned away every objection we raised.
• They could not reason away their doubts.

使い方： reason down/away something (He tried to reason away his fears.)

類義語： argue away, dispel

よく使う表現： reason down something, reason away something