cold fish, a

A person who is unfeeling, or at least shows no emotion. “Cooler than a fish on a cake of ice,” P. G. Wodehouse put it (Money in the Bank, 1942). He was scarcely the first. Shakespeare wrote, “It was thought she was a woman and was turned into a cold fish” (Autolycus telling of a ballad against the hard hearts of maids, TheWinter’s Tale, 4.4). See also COLD HEART