undulate

Etymology

Borrowed from Late Latin undulātus (“undulated”), from an unattested *undula (“small wave”), diminutive of Latin unda (“wave”).

verb

1. (transitive) To cause to move in a wavelike motion.
2. (transitive) To cause to resemble a wave.
3. (intransitive) To move in wavelike motions.
4. (intransitive) To appear wavelike.

adj

1. Wavy in appearance or form.
2. Changing the pitch and volume of one's voice.
3. (botany, of a margin) sinuous, winding up and down.