Where does “warmthless” come from?
warmthless (English) comes from English warmth, from Middle English warmth, from Old English wiermþu, from Proto-West Germanic warmiþu, from Proto-West Germanic warm, from Proto-Germanic warmaz, from Proto-Indo-European gʷʰer-, from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr.
warmthless (English): Devoid of warmth
Ancestry of “warmthless”, step by step