stone cold(redirected from stone-cold)
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Completely bereft of emotion or concern. Hyphenated if used as a modifier before a noun. The criminal was stone cold as she sat in the courtroom and heard the verdict being handed down. I just can't understand how such a sweet boy could turn into a stone-cold killer like that.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Unfeeling, insensible, as in That sad story left her stone cold. This analogy was already used by Shakespeare in Henry V (2:3): "Cold as any stone."
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.