出典:Wiktionary
From Middle English warmth, warmeth, wermþe, from 古期英語 *wiermþu (“warmth”), from Proto-West Germanic *warmiþu (“warmness; warmth”), corresponding to warm + -th. Cognate with Saterland Frisian Waarmte (“warmth”), West Frisian waarmte (“warmth”), Dutch warmte (“warmth”), German Low German Warmte, Warmt (“warmth”).
warmth (countable かつ uncountable, 複数形 warmths)