unionism unioniform • unionist · · · Info · Definitions · Synonyms · Characters · · unionism · · Text Latin · · Script 8 · · Length Definitions · · · (noun) the system or principles and theory of labor unions. Synonyms: trade unionism. · · Noun Definition 1 Synonyms · · · trade unionism · · Synonym 1 Characters · · i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 u latin small letter u U+0075