no longer alive
having no life
a dead planet
said of a body part: lacking feeling; numb
unfeeling or unresponsive
said of equipment: no longer working
said of a bottle or glass: empty or finished with
said of a ball: temporarily out of play
no longer used, active, or relevant
dead languages
dead coals
informal lacking in activity or interest; dull
said of a colour: not bright
said of a sound: dull
informal complete or absolute
a dead giveaway
dead as a doornail/dead as a dodo/doornail
utterly dead
dead as a dodo
no longer living or existing; quite dead
dead from the neck up
informal stupid
dead in the water
said of a ship: not able to move or function
dead meat
informal doomed, esp facing death
dead on one's feet
informal very tired
dead to the world
informal asleep or otherwise unaware of one's surroundings
deadness noun
[Old English dēad]