taxaholic adjective 1noun 1forms 3 adjective1 •(informal, disapproving) Having or supporting excessive taxes.As the taxaholic Clinton administration struggles to govern this taxaphobic nation, it is provoking protests not quite as stirring as the dean's, but which should be heeded. — 1993 noun1 •(informal, disapproving) A person or government which institutes or supports excessive taxes.The reason Canadians put us here was to voice their concerns and frustrations over the weight of a central government that is a tax and spend fanatic, a taxaholic. — 2000 formstaxaholics · more taxaholic · most taxaholic