| Word | Definitions | Synonyms |
|---|---|---|
| undulate | (verb) increase and decrease in volume or pitch, as if in waves | - |
| (verb) move in a wavy pattern or with a rising and falling motion | Synonyms: flap, roll, wave | |
| (verb) stir up (water) so as to form ripples | Synonyms: cockle, riffle, ripple, ruffle | |
| (verb) occur in soft rounded shapes | Synonyms: roll |