From Javanese ꦒꦸꦩꦸꦗꦼꦁ (gumujeng), from ꦒꦸꦗꦼꦁ (gujeng). Analyzed as gujeng + -um-
gumujeng (Sundanese script ᮌᮥᮙᮥᮏᮨᮀ)