undulate
definition: having a wavy margin and rippled surface
example:
speech part: adjective
synonyms:
definition: increase and decrease in volume or pitch, as if in waves
example: The singer's voice undulated
speech part: verb
synonyms:
definition: move in a wavy pattern or with a rising and falling motion
example: The curtains undulated
speech part: verb
synonyms:
roll
definition: stir up (water) so as to form ripples
example:
speech part: verb
synonyms:
riffle
definition: occur in soft rounded shapes
example:
speech part: verb
synonyms:
roll