IPA: //ˈbæθləs//
KK: /ˈbæθləs/
Not having a bath or the opportunity to take a bath.
After a long day of hiking, I felt dirty and bathless until I could find a shower.
Bathless → It is formed from "bath" (from Old English *baþ*, meaning a washing or immersion in water) and "-less" (meaning without). The word "bathless" means without a bath or lacking the opportunity to bathe.
Think of being 'without' ('-less') a 'washing' ('bath') — that's what bathless means.