Noun
archnemesis (plural archnemeses)
A chief nemesis.
Aquaman’s quest takes him to depths high and low as he battles all who stand in his way, including his archnemesis Black Manta. Source: Internet
Our film should not have made light of Peter Rabbit’s archnemesis, Mr. McGregor, being allergic to blackberries, even in a cartoonish, slapstick way,” the statement said. Source: Internet
She only needs to keep the whole thing a secret so that her archnemesis, Miss Ann Thrope, Rancho Soldado’s nightmare Town Councilwoman and high school Economics teacher, doesn’t get Vic tossed in jail. Source: Internet