noun
plural graves
[count] a hole in the ground for burying a dead body
When people think that a dead person would be very shocked or upset to see something that is happening now, they say that person is or must be turning/spinning in his/her grave or US turning over in his/her grave or US rolling (over) in his/her grave.
used to talk about death
dig your own grave
from (the) cradle to (the) grave
have one foot in the grave
adjective
graver; -est
[also more ~; most ~]
formal :very serious :requiring or causing serious thought or concern
serious and formal in appearance or manner
/ˈgrɑːv/ of an accent mark :having the form