swing, sway, oscillate, vibrate, fluctuate, waver, undulate mean to move from one direction to its opposite. swing implies a movement of something attached at one end or one side. sway …

It is as if a piece of wood is undulating on the surface of the ocean with no apparent direction.

UNDULATING definition: having a sinuous or wavelike shape or motion. See examples of undulating used in a sentence.

undulating (ˈʌndjʊˌleɪtɪŋ) adj 1. moving in waves or as if in waves 2. having a wavy form or appearance

Something that undulates has gentle curves or slopes, or moves gently and slowly up and down or from side to side in an attractive manner. As we travel south, the countryside begins to …

Definition of undulate verb in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

• But though Rechtauk had disappeared and the forest been hewn down, the land was still soft and undulating, still green. • By undulating this, it drives itself forwards - or, with equal ease, …

Britannica Dictionary definition of UNDULATE [no object] formal : to move or be shaped like waves undulating hills an undulating surface

UNDULATE definition: to move with a sinuous or wavelike motion; display a smooth rising-and-falling or side-to-side alternation of movement. See examples of undulate used in a sentence.

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. v.t. to cause to move in …