Lewis & Short

dictātōrĭus, a, um, adj. [dictator], of or belonging to a dictator; dictatorial: gladius, Cic. Clu. 44, 123: majestas, Liv. 4, 14; 8, 30: fulmen, id. 6, 39: invidia, id. 22, 26; cf. animadversio, Vell. 2, 68 fin.: juvenis, i. e. the son of the dictator, Liv. 7, 4.