Adjective undulate has 1 sense
  1. undulate - having a sinuate margin and rippled surface
    Antonym:
    rough (indirect, via smooth)
,Verb undulate has 4 senses
  1. ripple, ruffle, riffle, cockle, undulate - stir up (water) so as to form ripples
    --1 is one way to flow, flux
    Sample sentences:
    Something ----s
    Somebody ----s something
  2. roll, undulate - occur in soft rounded shapes; "The hills rolled past"
    Sample sentences:
    Something ----s
    Something is ----ing PP
  3. roll, undulate, flap, wave - move in a wavy pattern or with a rising and falling motion; "The curtains undulated"; "the waves rolled towards the beach"
    --3 is one way to move
    Derived forms: noun undulation2, noun undulation3
    Sample sentences:
    Something ----s
    Somebody ----s something
  4. undulate - increase and decrease in volume or pitch, as if in waves; "The singer's voice undulated"
    --4 is one way to
    change
    Sample sentence:
    Something ----s
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