Where does “warmth” come from?

warmth (Middle English) comes 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.

Ancestry of “warmth”, step by step

StepLanguageWordMeaning
1Old Englishwiermþuwarmth
2Proto-West Germanicwarmiþuwarmth
3Proto-West Germanicwarmwarm
4Proto-Germanicwarmazwarm
5Proto-Indo-Europeangʷʰer-warm, hot
6Proto-Indo-Europeangʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr—

Words derived from “warmth”

Every word from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr →Every word from Proto-Indo-European gʷʰer- →Every word from Proto-Germanic warmaz →