IPA: /ˈmæpləs/
KK: /mæpləs/
Not having a map or maps available for use.
We found ourselves mapless in the unfamiliar city, relying on our instincts to navigate.
Mapless → It is formed from "map" (from Old English *mappa*, meaning a representation of an area) and "-less" (meaning without). The word "mapless" means without a map or lacking a map.
Think of being 'without' ('-less') a 'representation of an area' ('map') — that's what mapless means.