- undulate⇄adj. wavy (1).
- undulate⇄undulate, verb, -lated,-lating,adjective.
- undulate⇄v.i. 1. to move in or in the manner of waves; rise and fall or come and go with a wavelike motion.
Ex. undulating water. (Figurative.) Tall spire from which the sound of cheerful bells Just undulates upon the list'ning ear (William Cowper).
- undulate⇄v.t. 1. to cause to move in or in the manner of waves.
2. to give a wavy form or surface to.