定説(ていせつ)

ていせつ
noun
established theory, accepted view
formalacademiccognition
1. established theory, accepted view, prevailing opinion
A theory or view that is widely accepted as correct or standard within a field. Often used when discussing whether something has become the consensus or when challenging conventional wisdom.
それは定説(ていせつ)になっている。
That has become the accepted view.
定説(ていせつ)を覆(くつがえ)す発見(はっけん)があった。
There was a discovery that overturned the established theory.
長年(ながねん)の定説(ていせつ)に疑問(ぎもん)を投(な)げかける研究者(けんきゅうしゃ)が現(あらわ)れた。
A researcher appeared who cast doubt on the long-held established theory.

Usage

Often appears in patterns like 定説(ていせつ)になる (become the accepted view), 定説(ていせつ)を覆(くつがえ)す (overturn the established theory), and 定説(ていせつ)とされる (be considered the established theory). Common in academic, scientific, and historical discussions.

Common collocations

Related Words

Related: 学説(がくせつ) (academic theory)
Synonym: 通説(つうせつ) (commonly accepted theory)
Related: 諸説(しょせつ) (various theories)
general
Added 2026.2.21 19:26 · Revised 2026.10.8 9:43
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