undulate

To cause to move in a wavelike motion.

Breath vocalized, i.e., vibrated and undulated.

To cause to resemble a wave.

To move in wavelike motions.

His tongue undulated.

Come lovely and soothing death, / Undulate round the world, serenely arriving, arriving, / In the day, in the night, to all, to each, / Sooner or later delicate death.

To appear wavelike.

Wavy in appearance or form.

Changing the pitch and volume of one's voice.

sinuous, winding up and down.