The term 'bitterly cold' can be described by a variety of words, including 'RAW, ' 'ICY, ' 'GLACIAL, ' 'ARCTIC, ' 'ACRID, ' and 'WINTRY.' 'RAW' is a three-letter word that means unprocessed or uncooked. 'ICY' is also a three-letter word that describes something that is extremely cold. 'GLACIAL' is a seven-letter word that refers to something that is very cold and slow-moving, like a glacier. 'ARCTIC' is a six-letter word that is used to describe the extreme cold of the ARCTIC region. 'ACRID' is a five-letter word that means having a sharp, unpleasant taste or smell. Finally, 'WINTRY' is a six-letter word that is used to describe something that is characteristic of winter, such as snow and cold temperatures.