Oppa comes from the words "opp" which means opposition in street slang. Oppa, however, relates to the term "Black Ops" which is a covert or clandestine operation by a government agency, a military unit or a paramilitary organization; it can include activities by private companies or groups. Someone who is under the Black Ops organisation is referred to as an "Oppa"
by glizzyfrompbm May 14, 2021