fall flat

US /fɔl flæt/
UK /fɔl flæt/
"fall flat" picture
1.

فشل, لم ينجح

fail to produce an intended effect; be unsuccessful

:
His jokes often fall flat with the audience.
نكاته غالبًا ما تفشل في إضحاك الجمهور.
The marketing campaign seemed to fall flat, as sales did not improve.
بدت الحملة التسويقية فاشلة، حيث لم تتحسن المبيعات.