having great power or force or potency or effect; "the most powerful government in western Europe"; "his powerful arms"; "a powerful bomb"; "the horse's powerful kick"; "powerful drugs"; "a powerful argument"
3
imperial
belonging to or befitting a supreme ruler; "golden age of imperial splendor"; "purple tyrant"; "regal attire"; "treated with royal acclaim"; "the royal carriage of a stag's head"
