be no good

Từ điển Oxford Advanced Learner 8th

be no ˈgood | not be any/much ˈgood idiom
1. to not be useful; to have no useful effect
• This gadget isn't much good.
• It's no good trying to talk me out of leaving.
•Was his advice ever any good?
2. to not be interesting or enjoyable
• His latest film isn't much good.
Main entry: ↑good_idiom