Pacific Isle is a term used to describe a serene and peaceful island in the Pacific Ocean. However, when considering antonyms of this phrase, a few terms come to mind. Firstly, a stormy island or an island experiencing extreme weather conditions, such as hurricanes or tornadoes, could be viewed as the opposite of a Pacific Isle. Additionally, an island prone to unrest, conflict, or wars would also be considered a polar opposite of a Pacific Isle. Lastly, an island that is polluted, dirty, or overrun with industrialization and commercialization would be a complete antonym to the serene and unspoiled beauty of a Pacific Isle.