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Verb: undulate  'ún-ju,leyt or 'ún-dyû,leyt
  1. Stir up (water) so as to form ripples
    - ripple, ruffle, riffle, cockle
     
  2. Occur in soft rounded shapes
    "The hills undulated past";
    - roll
     
  3. Move in a wavy pattern or with a rising and falling motion
    "The curtains undulated";
    - roll, flap, wave
     
  4. Increase and decrease in volume or pitch, as if in waves
    "The singer's voice undulated"
Adjective: undulate  'ún-ju,leyt or 'ún-dyû,leyt
  1. Having a wavy margin and rippled surface

Derived forms: undulated, undulates, undulating

See also: smooth

Type of: change, flow, flux, move

Encyclopedia: Undulate