undulation

Definitions

A wavelike motion or the action of moving smoothly up and down.

A gentle rising and falling in the body or surface of something.

A wavy form or outline.

Examples

The gentle undulation of the waves against the shore created a soothing rhythm.

The rolling hills created a beautiful undulation across the horizon.

Synonyms

wave ripple oscillation fluctuation vibration swelling rolling

Antonyms

stasis stillness flatness levelness stability immobility steadiness