沈ちん黙もくの殺さつ人じん者しゃ

expression, noun

silent killer

A metaphor for a disease or condition that progresses without obvious symptoms until it is serious. Often used in medical or public health contexts. Compare サイレントキラー, which is the direct loanword.

See also: サイレントキラー

• 高こう血けつ圧あつは沈ちん黙もくの殺さつ人じん者しゃと呼よばれることがある。

  High blood pressure is sometimes called a silent killer.