adj. 25B6; adjective
a frigid January night : VERY COLD, bitterly cold, bitter, freezing, frozen, frosty, icy, gelid, chilly, chill, wintry, bleak, sub-zero, arctic, Siberian, polar, glacial; informal nippy; Brit. informal parky.
frigid politeness : STIFF, formal, stony, wooden, unemotional, passionless, unfeeling, indifferent, unresponsive, unenthusiastic, austere, distant, aloof, remote, reserved, unapproachable; frosty, cold, icy, cool, unsmiling, forbidding, unfriendly, unwelcoming, hostile; informal offish, stand-offish.
hot, friendly.