ちょんぼ

錯和

mistake; blunder; bungle; goof

N3Noun
Noun, Suru verb, Intransitive verb
mistakeblunderbunglegoof
Noun, Suru verb, Intransitive verb
unintentional rule violation accompanied by a penalty
Noun, Suru verb, Intransitive verb
mistakenly announcing a win without having all the requisite tiles