onanist onanism • onanistic · · · Info · Definitions · Synonyms · Characters · · onanist · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a person who practices masturbation. Synonyms: masturbator. · · Noun Definition 1 Synonyms · · · masturbator · · Synonym 1 Characters · · a latin small letter a U+0061 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074