(adjective, verb)


1. having a wavy margin and rippled surface

Similar word(s): smooth


1. stir up (water) so as to form ripples

Similar word(s): cockle, riffle, ripple, ruffle

Definition categories: motion, flow, flux

2. occur in soft rounded shapes

Similar word(s): roll

Definition categories: stative

3. move in a wavy pattern or with a rising and falling motion

- The curtains undulated

Similar word(s): flap, roll, wave

Definition categories: motion, move

4. increase and decrease in volume or pitch, as if in waves

- The singer's voice undulated

Definition categories: change