[verb uhn-juh-leyt, uhn-dyuh-, -duh-; adjective uhn-juh-lit, -leyt, uhn-dyuh-, -duh-]
- to move with a sinuous or wavelike motion; display a smooth rising-and-falling or side-to-side alternation of movement: The flag undulates in the breeze.
- to have a wavy form or surface; bend with successive curves in alternate directions.
- (of a sound) to rise and fall in pitch: the wail of a siren undulating in the distance.
- to cause to move in waves.
- to give a wavy form to.
- Also un·du·lat·ed. having a wavelike or rippled form, surface, edge, etc.; wavy.
Origin of undulate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for undulate
Don't they look brave As they undulate—(undulate, mind you,From unda, a wave).The Book of Humorous Verse
In the meadows I see her undulate—the black miner, the mole, continues her labours.The Bird
Mrs. Hearty collapsed into a chair and began to undulate with mirth.Adventures of Bindle
Herbert George Jenkins
The two lower lobes are very small; the lobes are undulate or entire.Forest Trees of Illinois
Fuller George D.
I vow if her neck had been bare one could have seen it undulate beneath the skin.Simon the Jester
William J. Locke
- to move or cause to move in waves or as if in waves
- to have or provide with a wavy form or appearance
- having a wavy or rippled appearance, margin, or forman undulate leaf
C17: from Latin undulātus, from unda a wave
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for undulate
1660s, from undulation. Related: undulated, undulating.
Online Etymology Dictionary, © 2010 Douglas Harper