チョンボ

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

blunder; goof; screw-up

Colloquial term for a careless mistake or blunder, often with a sense of embarrassment or penalty. Used as a noun or with する.

• またチョンボしちゃった。

  I screwed up again.

• 彼かれのチョンボで試し合あいに負まけた。

  We lost the game because of his blunder.

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

mahjong penalty for rule violation

In mahjong, an unintentional rule violation that incurs a penalty, such as mistakenly revealing a tile or making an invalid declaration.

• チョンボをすると満まん貫がんの罰ばっ符ぷを払はらわされる。

  If you commit a chombo, you have to pay a mangan penalty.

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

false mahjong win declaration

Obsolete original mahjong meaning: mistakenly declaring a win without having all the required tiles. Now largely replaced by the broader penalty sense.

• 昔むかしのルールでは、誤あやまった和了ほーら宣せん言げんをチョンボと呼よんだ。

  In old rules, a mistaken win declaration was called chombo.