cold shoulder, to give/show the

cold shoulder, to give/show the

To snub someone; to assume a distant manner, or show indifference. The term dates from the early nineteenth century and was frequently used by Sir Walter Scott. It is believed to come from the custom of serving hot meat to welcome guests, and of serving a cold shoulder of mutton or beef, considered a much inferior dish, when they had outstayed their welcome.
See also: cold, give, show