brain–dead 
/ˈbreɪnˌdɛd/ adjective
/ˈbreɪnˌdɛd/ adjective 1 medical : showing no sign of activity in the brain : having no brain function
▪ Doctors determined that she was brain-dead. 2 informal : very stupid
▪ You would have to be brain-dead not to see the problem. : not able to function normally ▪ I'll be brain-dead in the morning if I don't get some sleep.
▪ Doctors determined that she was brain-dead.
▪ You would have to be brain-dead not to see the problem. : not able to function normally ▪ I'll be brain-dead in the morning if I don't get some sleep.
