hold back

phrasal verb
1
to prevent somebody/something from moving forward or crossing something
مانع شدن, بازداشتن, جلوگیری کردن, سد کردن
2
to prevent the progress or development of somebody/something
مانع شدن, بازداشتن, جلوگیری کردن, سد کردن
Do you think that mixed-ability classes hold back the better students?
We are determined that nothing should hold back the peace talks.
3
to not tell somebody something they want or need to know
پنهان کردن, از گفتن خودداری کردن, بازگفت نکردن
to hold back information
I think he's holding something back. I'm sure he knows more than he admits.
4
to stop yourself from expressing how you really feel
خودداری کردن, جلوگیری از بروز احساسات
She just managed to hold back her anger.
He bravely held back his tears.
5
to hesitate or to make somebody hesitate to act or speak
تردید کردن, مانع شدن, درنگ کردن, بازداشتن
She held back, not knowing how to break the terrible news.
I wanted to tell him the truth, but something held me back.