頓とん死し

noun, noun or participle which takes 'suru', intransitive verb

sudden death; unexpected death

Refers to dying suddenly and unexpectedly, often from natural causes or an unforeseen event. Can be used as a noun or with する to mean 'to die suddenly'.

• 彼かれは心しん臓ぞう発ほっ作さで頓とん死しした。

  He died suddenly from a heart attack.

• そのニュースは有ゆう名めい選せん手しゅの頓とん死しを伝つたえていた。

  The news reported the sudden death of a famous athlete.

noun, noun or participle which takes 'suru', intransitive verb

blunder that ends the game

Shogi term for a decisive mistake that immediately loses the game. Also used figuratively for any critical blunder in a competitive context.

• 終しゅう盤ばんで頓とん死しを喫きっしてしまった。

  I made a game-ending blunder in the endgame.

• その一いっ手てが頓とん死しとなり、投とう了りょうした。

  That move turned out to be a fatal blunder, and I resigned.