COLDNESS
break the ice
to initiate social interchanges and conversation; to get something started. (The ice refers to social coldness.)Tom is always the first one to break the ice at parties.It's hard to break the ice at formal events.
chilled to the bone
very cold.I was chilled to the bone in that snowstorm.The children were chilled to the bone in the unheated room.
cold comfort
no comfort or consolation at all.She knows there are others worse off than she is, but that's cold comfort.It was cold comfort to the student that others had failed as badly as he did.
look as if butter wouldn't melt in one's mouth
to appear to be cold and unfeeling (despite any information to the contrary).Sally looks as if butter wouldn't melt in her mouth. She can be so cruel.What a sour face. He looks as if butter wouldn't melt in his mouth.