imperialist

Specifically, in recent and particularly in British and United States polities, one who favors the principles and practices of imperialism.

A subject or follower of an emperor; one who upholds the cause of an emperor or an empire; specifically, one of the partizans of the empire, or of the combatants for the imperial cause, as in the thirty years’ war in Germany (1618–48).

One who favors imperial government, or government by an emperor; one who favors the establishment or maintenance of an empire.

One who serves an emperor; one who favors imperialism.

of, or relating to imperialism

An advocate of imperialism.

of or relating to imperialism

a believer in imperialism