The term 'bitter cold' can be described by four crossword solutions: ACRID (5 letters), ICY (3 letters), RAW (3 letters), and ARCTIC (6 letters). ACRID is an adjective meaning having a sharp, pungent taste or smell. ICY is an adjective meaning extremely cold. RAW is an adjective meaning unprocessed or untreated. ARCTIC is an adjective meaning extremely cold, referring to the region around the North Pole. Together, these words describe a very cold and unpleasant environment.