IPA: /bəˈluːnɪst/
KK: /bəˈluːnɪst/
A person who flies or travels in a balloon, particularly a hot-air balloon.
The balloonist skillfully navigated the colorful hot-air balloon through the clear blue sky.
Balloonist → It is formed from "balloon" (from French *ballon*, meaning a large ball or inflated object) and "-ist" (meaning a person who practices or is concerned with something). A balloonist is a person who operates or is involved with balloons, particularly in the context of hot air ballooning.
Think of a 'balloon' as an inflated object and '-ist' meaning a person involved with it — a balloonist is someone who works with balloons.