The keys on the keyboard undulate in a slow sine wave.
undulate it was undulating with one reasonable hill would sum it up for me.
undulate tee shot is required to set up the chance of playing over the water to reach the huge but undulating green.
undulate's design concept focuses heavily on developing an organic, lush and green park, with softly undulating hills.
undulate in a slow sine wave.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.