smoking gun
(犯罪の)決定的証拠、something that serves as conclusive evidence or proof (as of a crime or scientific theory)
一般例文
- This document is the smoking gun that proves that he was lying.
英字新聞からの例文
- 引用元 : Financial Times (by Robin Harding) - Japan fake document scandal shakes Abe government (2018/03)
Analysts said there was no smoking gun to suggest national leaders had ordered the sale, but it will be hard to escape questions about why the finance ministry altered ...
