意志の弱い

weak-willed

→ 意志
phrase Rare #38,430
weak-willed Describes someone who has difficulty resisting temptation or sticking to decisions. The phrase modifies a noun, such as 意志の弱い人 (a weak-willed person).
JA: 私は意志の弱い人間なので、ダイエット中でもお菓子を食べてしまう。
EN: I'm weak-willed, so I end up eating sweets even when I'm on a diet.

意志の弱いところ

A weak point in my willpower

— ウィッチ (2016)

彼は意志の弱い父親に育てられたため甘いものが大好きだ

Because he was raised by a weak-willed father, he loves sweets.

あいつは意志の弱い人です

He's a weak-willed person.

彼女は意志の弱い母親に育てられたので甘いものが大好きだ

She was raised by a weak-willed mother, so she loves sweets.