imperiōsus (inp-) adj. with comp. and sup. imperium, possessed of command, far-ruling, mighty, powerful, puissant: urbes: dictatura, L.: virga, i. e. the fasces, O.: sibi qui imperiosus, lord of himself, H.

—Arbitrary, domineering, tyrannical: domina: Proserpina, resistless, H.: imperiosius aequor, H.: familia imperiosissima, L.