archrival in English dictionary archrival Meanings and definitions of "archrival" A chief rival. The term is generally applied only to rivals who have competed against each other for at least a few years. noun A chief rival. more Grammar and declension of archrival archrival ( plural archrivals) archrival (plural archrivals) more Sample sentences with "archrival" Declension Stem Try again Available translations Danish Dutch Finnish German Polish Portuguese Swedish Authors