stone-dead

[ stohn-ded ]
/ ˈstoʊnˈdɛd /

adjective

undeniably dead; completely lifeless.

Origin of stone-dead

1250–1300; Middle English (north) standed. See stone, dead
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for stone dead

stone-dead

adjective

completely lifeless
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012