1. having a smooth wavelike motion or form; rising and falling in waves

Examples

• The undulating hills stretched as far as the eye could see.
• She watched the undulating wheat field sway in the breeze.
• The dancer moved with undulating grace across the stage.
• The undulating coastline created many small bays and inlets.
• Sand dunes formed undulating patterns in the desert.
• The undulating rhythm of the music was hypnotic.