Terms for subject Informal containing loss

English	German
total dead loss	Totalversager
dead loss	totaler Reinfall
total dead loss	totale Niete
dead loss	Pflaume ugs. : Versager
I was completely at a loss.	Ich wusste mir keinen Rat mehr (Andrey Truhachev)
I was completely at a loss.	Ich wusste keinen Rat mehr (Andrey Truhachev)
to be at a complete loss as to what to do	dastehen wie der Ochs vorm Scheunentor
to be at a complete loss as to what to do	dastehen wie der Ochs vorm Berg
to be at a loss	anstehen österr.