also diss, slang, by 1980, shortening of disrespect or dismiss, originally in U.S. Black English, popularized by hip hop. Related: Dissed; dissing. Earlier it was short for disconnected in the telephone sense and used figuratively in slang to mean "weak in the head" (1925).
Roman underworld god, from Latin Dis, contracted from dives "rich," which is related to divus "divine, god," hence "favored by god." Compare Pluto and Old Church Slavonic bogatu "rich," from bogu "god."
