let down
US /let daʊn/
UK /let daʊn/

1.
خذل, خيب الأمل
to disappoint someone by failing to do what they expect or hope
:
•
I promised to help him, and I don't want to let him down.
لقد وعدت بمساعدته، ولا أريد أن أخذله.
•
She felt completely let down by her friends.
شعرت بالخذلان التام من أصدقائها.