dead

1 dead /ˈdɛd/ adjective
1 dead
/ˈdɛd/
adjective
Britannica Dictionary definition of DEAD
1 
: no longer alive or living : no longer having life
Usage see: deceased
◊ To leave (someone or something) for dead is to leave a person or animal that you know will probably die instead of trying to help.
2 
a  [or more dead; most dead] deader; deadest : not able to feel or move
b  : very tired
c  : feeling no emotions
3 
informal : certain to be punished or hurt
4 
of a machine or device : no longer working especially because of not having electricity
5 
: no longer active or operating
6 
: naturally not living
7 
[or more dead; most dead] deader; deadest : lacking in activity or excitement
8 
— used to describe a time when nothing is being said or done
9 
: no longer performed or enjoyed
10 
of a language : no longer spoken
11 
sports — used to describe a situation in which play stops during a game
12 
a  : complete, total, or absolute
b  : sudden and complete
13 
: perfect or exact

(as) dead as a doornail

(chiefly US) informal or chiefly British (as) dead as a dodo
— used to stress that someone or something is dead — often used figuratively

beat a dead horse

or flog a dead horse
— see 1horse

catch/see (someone) dead

informal
◊ If you say that people wouldn't/won't catch/see you dead or that you wouldn't/won't be caught/seen dead doing something, you refuse to let others see you doing it because it would cause you to be embarrassed.

dead and buried

or dead and gone
1 
: no longer living : dead
2 
: no longer used or accepted

dead from the neck up

informal
: very stupid or foolish

dead in the water

informal
: not making any progress : not having any chance of success

dead men tell no tales

— see tale

dead on arrival

: having died before getting to a hospital, emergency room, etc. — often used figuratively

dead to rights

— see 3right

dead to the world

informal
: sleeping very deeply

drop dead

informal
1 
: to fall to the ground and die very suddenly
2 
— used as a rude way to tell someone to leave you alone
— see also drop-dead

knock dead

— see 1knock

over my dead body

— see body

— deadness

noun [noncount]
2 dead /ˈdɛd/ noun
plural dead
2 dead
/ˈdɛd/
noun
plural dead
Britannica Dictionary definition of DEAD
1 
[plural] : people who have died
— usually used with the
2 
the dead : the state of being dead — usually used in the phrases rise from the dead or come back from the dead or return from the dead to mean to become alive again after dying
3 
[noncount] : the time in the middle of the night or winter
3 dead /ˈdɛd/ adverb
3 dead
/ˈdɛd/
adverb
Britannica Dictionary definition of DEAD
1 
: completely or totally
2 
: in a sudden and complete way
3 
: directly or exactly