IPA: /ˈskaɪləs/
KK: /ˈskaɪləs/
Having no sky above; lacking the expanse of the atmosphere that is typically visible from the ground.
The landscape felt eerie and skyless, as if the world had been cut off from the heavens.
Skyless → It is formed from "sky" (from Old Norse *ský, meaning cloud or sky) and "-less" (meaning without). The word "skyless" means without a sky or lacking the presence of the sky.
Imagine a place that is 'without' ('-less') the 'sky' — that's what skyless means.