1. to move with a smooth wavelike motion
2. to have a wavy form or surface

Examples

• The flag undulates in the gentle breeze.
• The snake undulates across the desert sand.
• The wheat field undulates like a golden sea.
• Her hair undulates as she walks.
• The landscape undulates with rolling hills.
• The dancer’s body undulates to the music.
• The ribbon undulates through the air.