1. undulate - verb
· stir up (water) so as to form ripples
Synonym(s): ripple, ruffle, riffle, cockle
2. undulate - verb
· occur in soft rounded shapes; "The hills rolled past"
Synonym(s): roll
3. undulate - verb
· move in a wavy pattern or with a rising and falling motion; "The curtains undulated"; "the waves rolled towards the beach"
Hypernym(s): move
4. undulate - verb
· increase and decrease in volume or pitch, as if in waves; "The singer's voice undulated"
Hypernym(s): change
5. undulate - adjective
· having a wavy margin and rippled surface
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