exanthemEtymologyBorrowed from Latin exanthema, from Ancient Greek ἐξάνθημα (exánthēma), from ἐξανθέω (exanthéō), from ἐξ (ex) + ἄνθος (ánthos, “flower”).exanthem means A widespread rash usually occurring in children. Lexicurio rates it Sui generis — a strength score of 86 out of 100.nounA widespread rash usually occurring in children.