みっ 坊主 ぼうず
mikkabōzu

Noun

1. person who cannot stick to anything; unsteady worker; monk for three days — literal

Yojijukugo
かれ何事 なにごとでも みっ 坊主 ぼうずだ。
karewa nanigotodemo mikkabōzuda.
He can't stick to anything very long.
Other forms: