a dusty answer

a dusty answer

or

a dusty reply

BRITISH, OLD-FASHIONED
If you ask for something or suggest something and you get a dusty answer or a dusty reply, you receive an unpleasant and negative answer. He asked three times to speak to the king, but each time received a dusty answer. Ask a world-class sportsman to spend several hours testing your product and you are likely to receive a dusty reply.
See also: answer, dusty