yavaşça yok olmak

listen to the pronunciation of yavaşça yok olmak
التركية - الإنجليزية
peter out
To dwindle; to tail off; to diminish to nothing

What started as a great effort ended up petering out to nothing.

end weakly; "The music just petered out--there was no proper ending"
disappear, fade out of sight; die out, be extinguished; be used up, run out
use up all one's strength and energy and stop working; "At the end of the march, I pooped out"