a loss
Examples
Power does not corrupt. Fear corrupts... perhaps the fear of a loss of power.
I am always at a loss at how much to believe of my own stories.
In our world, in which religious images are losing their meaning, in which our customs are getting more and more secular, we are losing our sense of the eternal. I think it's a loss that has done a great deal of damage to modern art. Painting is a return to origins.
A man with a sense of humor is never at a loss for words or action.
When at a loss how to go on, cough.
A clever master turns even a loss into a gain.