cold fish, a

cold fish

Someone who shows no emotion and comes across as unfriendly or disinterested. The manager decided not to hire Bill as the store greeter because he came across like a cold fish during the interview.
See also: cold, fish
Farlex Dictionary of Idioms.

*cold fish

Fig. a person who is distant and unfeeling. (*Typically: act like ~; be ~.) Bob is so dull—a real cold fish. She hardly ever speaks to anyone. She's a cold fish.
See also: cold, fish
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

cold fish

A hard-hearted, unfeeling individual, one who shows no emotion, as in Not even the eulogy moved him; he's a real cold fish. This expression was used by Shakespeare in The Winter's Tale (4:4): "It was thought she was a woman, and was turn'd into a cold fish." However, it came into wider use only in the first half of the 1900s.
See also: cold, fish
The American Heritage® Dictionary of Idioms by Christine Ammer.

a cold fish

If you call someone a cold fish, you mean that they do not show their emotions and can seem unfriendly or unsympathetic. Since the President is generally seen as a cold fish, it is all the more impressive when he does show his feelings. He didn't really show much emotion — he's a bit of a cold fish.
See also: cold, fish
Collins COBUILD Idioms Dictionary, 3rd ed.

a ˌcold ˈfish

(disapproving) a person who shows little or no emotion, or is unfriendly, reserved, etc: When I first met him, he seemed rather a cold fish, but actually he’s quite passionate.
See also: cold, fish
Farlex Partner Idioms Dictionary

cold fish

n. a dull and unresponsive person. I hate to shake hands with a cold fish like that. He didn’t even smile.
See also: cold, fish
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions

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, The Winter’s Tale, 4.4). See also cold heart.
See also: cold
The Dictionary of Clichés by Christine Ammer
See also:
  • a cold fish
  • cold fish
  • choked with emotion
  • breeze past (someone or something)
  • give (one) the cold shoulder
  • give someone the cold shoulder
  • he, she, etc. isn't having any
  • not be having any of it
  • not having any
  • be not having any (of it)