of, pertaining to, marked by, or favoring reaction, esp. extreme conservatism or rightism in politics; opposing political or social change.

a reactionary person.

adjective

liberal , progressive , radical

noun

liberal , progressive , radical

adjective

counterrevolutionary , die-hard * , obscurantist , old-line , orthodox , regressive , retrogressive , right , rightist , rigid , standpat , tory , traditional , traditionalistic , die-hard , mossbacked , ultraconservative , backward , conservative

noun

bitter-ender , counterrevolutionary , diehard * , hard hat , intransigent , obscurantist , reactionist , rightist , right-winger , royalist , standpatter , tory , traditionalist , ultraconservative , die-hard , mossback , conservative , diehard , orthodox