Suddenly, like the surging crest of an unexpected wave, hope filled him again.

He might still have been able to disentangle himself had he not swallowed a mouthful of water from an unexpected wave.

An uncharacteristic and unexpected wave of emotion had overtaken him.

It always seemed to come in huge, unexpected waves that left her flailing helplessly.

I was suddenly shaken by an unexpected wave of pity.

Suddenly he felt an unexpected wave of relief.

Instead of being afraid of that unexpected wave, he decided to play with it.

The ability to maintain your deepest self despite unexpected waves.

I'm aiding and abetting a criminal, she thought, an unexpected wave of excitement crashing inside her.

Seeing it, feeling it, she felt herself struck by a hard, unexpected wave of envy.