5 letters · 8 points in Scrabble
noun lack of normal muscular tension or tonus
originBorrowed from New Latin atonia, from Ancient Greek ἀτονία (atonía, “languor”), from ἄτονος (átonos, “languid”), from ἀ- (a-, “privative”) + τόνος (tónos, “accent”), from τείνω (teínō, “to stretch”).
Etymology from Wiktionary, CC BY-SA 3.0