undulate

To move in waves or with a smooth, wavelike motion.

To have a wavelike appearance or form.

To increase and decrease in volume or pitch.

To cause to move in a smooth wavelike motion.

To give a wavelike appearance or form to.

Having a wavy outline or appearance.

Wavy; having a waved surface.

To have a wavy motion; rise and fall in waves; move in waves.

Synonyms Waver, etc. See fluctuate.

To cause to wave, or move in waves; cause to vibrate.