polar
adj. B1 Intermediate US //ˈpoʊɫɝ// UK //pˈəʊlɐ// po·lar
adj. relating to the North or South Pole, or describing two things that are completely opposite. You use it to talk about very cold places or people who have totally different ideas.
adj. relating to the regions around the North or South Pole; also used to describe two things that are diametrically opposed in nature or opinion.
The polar bear lives in the Arctic.
Despite being twins, their personalities are polar opposites; one is shy while the other is very outgoing.
The expedition faced extreme challenges as they navigated the harsh polar environment during the height of the Antarctic winter.
From Late Latin polāris, equivalent to pole + -ar.
Usage
Commonly used in the fixed phrase 'polar opposites' to emphasize a total lack of similarity.