Oppressor

·noun One who oppresses; one who imposes unjust burdens on others; one who harasses others with unjust laws or unreasonable severity.

oppressor
oppressor, ōris, m. [opprimo], a crusher , destroyer : oppressores dominationis, Brut. ap. Cic. Ep...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.