a time when coldness (or some other quality associated with death) is intense
"the dead of winter"
Time when coldness, darkness, or stillness is most intense.
"The crew had to navigate carefully through the dead piles that lined the abandoned tunnel walls."
(usually in the plural) Sterile mining waste, often present as many large rocks stacked inside the workings.
In plain English: A dead person is someone whose heart has stopped beating and who can no longer live.
"The dead were buried in the small village cemetery."
Usage: Use "dead" as a noun to describe a period of extreme quiet, darkness, or inactivity, such as the dead of night. Do not use it this way for a deceased person, which requires the adjective form before a noun like "dead man."
To prevent by disabling; stop.
"The technician managed to dead the engine remotely before it could cause a collision."
In plain English: To dead means to kill someone or something by ending their life.
"The connection went dead after the storm knocked out the power lines."
Usage: Use "dead" as a verb only when specifically referring to killing or disabling something completely, such as in technical contexts like "dead the engine." In standard everyday English, it is far more common and correct to use the verb "kill" for this meaning.
no longer having or seeming to have or expecting to have life
"the nerve is dead"
"a dead pallor"
"he was marked as a dead man by the assassin"
not showing characteristics of life especially the capacity to sustain life; no longer exerting force or having energy or heat
"Mars is a dead planet"
"dead soil"
"dead coals"
"the fire is dead"
lacking acoustic resonance
"dead sounds characteristic of some compact discs"
"the dead wall surfaces of a recording studio"
out of use or operation because of a fault or breakdown
"a dead telephone line"
"the motor is dead"
No longer living. (Also used as a noun.)
"The old oak tree stood dead and bare in the middle of the field, its branches reaching out like skeletal fingers toward the gray sky."
In plain English: Dead means not alive anymore.
Usage: Use "dead" to describe something that no longer lives or functions, such as a plant, animal, or electronic device. Avoid using it metaphorically for boredom or sadness in formal writing unless the context clearly supports that specific figurative meaning.
completely and without qualification; used informally as intensifiers
"an absolutely magnificent painting"
"a perfectly idiotic idea"
"you're perfectly right"
"utterly miserable"
"you can be dead sure of my innocence"
"was dead tired"
"dead right"
Exactly.
"You can never be too dead set on getting that promotion before you apply."
In plain English: Dead means completely finished with no energy left to do anything else.
"The ball landed dead in the center of the basket."
Usage: Use "dead" as an adverb only in informal speech to mean "exactly," such as when someone says, "That's dead on." It should not be used in formal writing or standard grammar to modify verbs.
The word "dead" comes from Old English dēad, which shares a common ancestor with related words in other Germanic languages like German and Dutch. Its meaning has remained unchanged since it traveled into Middle English from earlier forms of the language.