Home › Words › U › underwarmunderwarmunderwarm means insufficiently warm.Among words judged in Lexicurio's Arena, underwarm ranks #2,613 of 42,762 for Qualifying.EtymologyFrom under- + warm.adjInsufficiently warm.e.g.“Overdressed and underwarm. But when the boss gives me an assignment, I go.” — 2020, Rebecca Chastain, A Fistful of Magic:verbTo warm insufficiently; To fail to provide with the expected or required amount of heat.e.g.“Near-synonym: underheat”To heat from below.Definitions & examples from Wiktionary (CC BY-SA 3.0).