ꦠꦺꦴꦱ꧀ (Javanese) comes from Old Javanese atwas, from Old Javanese a-, from Sanskrit अ-, from Proto-Indo-Iranian a-, from Proto-Indo-European n̥-, from Proto-Indo-European ne — not.
ꦠꦺꦴꦱ꧀ (Javanese): hardness