Terrain/land that is not mountainous, but has elevation. A specific area of land that gains in elevation and then drops, although not as much as a mountainous area would.
The land area below the Rocky Mountains is hillious.
We took a hike that was rather steep and hillious.
to be as funny or pleasing or to have high degree of humor as Hillary.
Early 21st century Native American: from Vietnam mixed German background ( from Greek hilaros 'cheerful' ) + ous. The sense ' exceedingly amusing ' dates from 2019.
Me: You're so Hillarious
Hillary: Haha that is so punny of you! ;)
His plan for universal health care was Hillariously unworkable.
"Sure, deck your limbs in pants;
Yours are the limbs, my sweeting.
You look divine as you advance,
Hillarious when retreating."
--Ogden Nash, with some modification