Dictionary / Vocabulary / 意志薄弱
いしはくじゃく
weak-willed; lacking a purpose; lacking will power to be patient, purposeful, or resolute
こいつは意志薄弱な男です。
He's a weak-willed man.
早くも、意志薄弱ぶりを発揮した。
He's already shown his weak-willed nature.