1. Noun, Suru verb, Intransitive verb

   mistake; blunder; bungle; goof

   ColloquialUsually written using kana alone

2. unintentional rule violation accompanied by a penalty

   MahjongUsually written using kana alone

3. mistakenly announcing a win without having all the requisite tiles

   MahjongUsually written using kana aloneObsolete termoriginal meaning

Also written 冲和【ちょんぼ】chonbo