Imperialism :: Imperialism (n.) The power or character of an emperor; imperial authority; the spirit of empire.
Imperialist :: Imperialist (n.) One who serves an emperor; one who favors imperialism.
Imperiality :: Imperiality (n.) An imperial right or privilegs. See Royalty.
Imperialize :: Imperialize (v. t.) To invest with imperial authority, character, or style; to bring to the form of an empire..