くろうとはだし
outdoing a professional; putting an expert to shame
Also written 玄人裸足、玄人跣
Noun, No-adjective
あの人ひとの歌うたは玄人くろうとはだしです。
His singing outdoes a professional.
カラオケでの彼かれの歌うた、玄人くろうとはだしだね。
His karaoke voice would put a professional to shame.