Verb
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increase and decrease in volume or pitch, as if in waves
"The singer's voice undulated"
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move in a wavy pattern or with a rising and falling motion
"The curtains undulated"
"the waves rolled towards the beach"
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occur in soft rounded shapes
"The hills rolled past"
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stir up (water) so as to form ripples
Adjective
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having a wavy margin and rippled surface