Juliana felt a formidable energy, a surge that shook her from head to foot.

The dance soon became a boring game, for its unmotivated nastiness seemed merely a pretext to display the company's formidable energy.

I would need to eat and rest to replenish the formidable energies expended in the reconstruction.

The boys tackled these jobs with formidable energy.

Now, at considerably greater length and with formidable energy, she describes where that promise led.

Even a man of his formidable energy cannot go on for ever.

Instead he channelled his formidable energies into the betterment of his native town.

No one doubts Kasich's passion or his formidable energy.

I used to have this formidable energy.

He is taking early retirement in order to concentrate his formidable energies on teaching adults.