IPA: /həˈraɪzənləs/
KK: /həˈraɪzənləs/
Describing a state or condition where there is no visible horizon, often implying an endless or boundless view.
The landscape appeared horizonless, stretching endlessly into the distance.
Horizonless → It is formed from "horizon" (from Old French *orizont*, meaning the line at which the earth's surface and the sky appear to meet) and "-less" (meaning without). The word "horizonless" means without a horizon or lacking a visible boundary between earth and sky.
Think of a line where the earth meets the sky ('horizon') and remember that 'horizonless' means without that line.