But they will have lost all life, energy or sense of purpose.

I wondered how much energy I'd lost in the past year and a half.

It was still early in the day, but I'd lost my energy for the hunt.

The play loses its energy at times but always comes back.

There was no doubt about it: the star lost energy with each use.

"It seemed to have lost its energy and passion recently."

But the sense of losing energy stopped at once, as if someone had turned off the tap.

The molecules in the air lose energy and slow down.

The director does this to keep the scene from losing its energy and intensity.

As the electrons moved in a circle, they would lose energy and give off light.