We don't have synonyms for mangas yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are manas, manga and mangos.
(n) :
(now historical) A type of cocky, working-class man in early twentieth-century Greece, associated with violent behaviour, alcohol and hashish, and celebrated in various folk songs.
(n) :
(now historical) A type of cocky, working-class man in early twentieth-century Greece, associated with violent behaviour, alcohol and hashish, and celebrated in various folk songs.