tied to somebody’s apron strings
US /taɪd tu ˈsʌm.bɑː.diz ˈeɪ.prən strɪŋz/
UK /taɪd tu ˈsʌm.bɑː.diz ˈeɪ.prən strɪŋz/

1.
母親の言いなり, 親離れできない
to be too dependent on someone, especially one's mother
:
•
He's still tied to his mother's apron strings, even though he's 30 years old.
彼は30歳なのに、まだ母親の言いなりだ。
•
It's time for him to cut the cord and stop being tied to his mother's apron strings.
彼が自立して、母親の言いなりになるのをやめる時が来た。