reason

/ˈɹiːzən/

Proposed by a contributor, not yet supported by evidence.

Also seen as: reasons · reasoning · reasoned

Sense 1

Meaning · English

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

Nghĩa · Tiếng Việt

nguyên nhân của một sự việc

Machine-translated — suggest a fix

Noun

Examples

The reason this tree fell is that it had rotted.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 2

Meaning · English

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

Nghĩa · Tiếng Việt

một động lực cho hành động

Machine-translated — suggest a fix

Noun

Examples

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

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 3

Meaning · English

To deduce or come to a conclusion by being rational.

Nghĩa · Tiếng Việt

kết luận bằng cách hợp lý

Machine-translated — suggest a fix

Verb

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. […]"

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 4

Meaning · English

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

Nghĩa · Tiếng Việt

thực hiện quá trình suy luận

Machine-translated — suggest a fix

Verb

Examples

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.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Common questions

What does “reason” mean?

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

Is “reason” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.