Synonyms of the word

deathly

• adj. Appearing as though dead, or on the verge of death.
• adj. Fatal, causing death.
• adj. Extreme.
• adv. In a way that resembles death.
• adv. Extremely, dreadfully.

dead

• adj. (not comparable) No longer living.
• adj. (hyperbolic) Figuratively, not alive; lacking life.
• adj. (of another person) So hated that they are absolutely ignored.
• adj. Without emotion.
• adj. Stationary; static.
• adj. Without interest to one of the senses; dull; flat.
• adj. Unproductive.
• adj. (not comparable, of a machine, device, or electrical circuit) Completely inactive; without power; without…
• adj. (not comparable) Broken or inoperable.
• adj. (not comparable) No longer used or required.
• adj. (engineering) Not imparting motion or power.
• adj. (not comparable, sports) Not in play.
• adj. (not comparable, golf, of a golf ball) Lying so near the hole that the player is certain to hole it in…
• adj. (not comparable, baseball, slang, 1800s) Tagged out.
• adj. (not comparable) Full and complete.
• adj. (not comparable) Exact.
• adj. Experiencing pins and needles (paresthesia).
• adj. (informal) (Certain to be) in big trouble.
• adj. Constructed so as not to transmit sound; soundless.
• adj. (obsolete) Bringing death; deadly.
• adj. (law) Cut off from the rights of a citizen; deprived of the power of enjoying the rights of property.
• adv. (degree) Exactly right.
• adv. (degree) Very, absolutely, extremely, suddenly.
• adv. As if dead.
• n. (uncountable, singular only, often with "the") Time when coldness, darkness, or stillness is most intense.
• n. (plural, with "the") Those who have died.
• v. (transitive) To prevent by disabling; stop.
• v. (transitive) To make dead; to deaden; to deprive of life, force, or vigour.
• v. (Britain, transitive, slang) To kill.

deadly

• adj. (obsolete) Subject to death; mortal.
• adj. Causing death; lethal.
• adj. Aiming or willing to destroy; implacable; desperately hostile.
• adj. (by extension) Very accurate (of aiming with a bow, firearm, etc.).
• adj. (informal) Very boring.
• adj. (informal) Excellent, awesome, cool.
• adv. (obsolete) Fatally, mortally.
• adv. In a way which suggests death.
• adv. Extremely.

deathlike

• adj. Resembling or characteristic of death.
• adj. (obsolete) Deadly.

fatal

• adj. Proceeding from, or appointed by, fate or destiny.
• adj. Foreboding death or great disaster.
• adj. Causing death or destruction.
• adj. (computing) Causing a sudden end to the running of a program.
• n. A fatality; an event that leads to death.
• n. (computing) A fatal error; a failure that causes a program to terminate.

mortal

• adj. Susceptible to death by aging, sickness, injury, or wound; not immortal.
• adj. Causing death; deadly, fatal, killing, lethal (now only of wounds, injuries etc.).
• adj. Fatally vulnerable; vital.
• adj. Of or relating to the time of death.
• adj. Affecting as if with power to kill; deathly.
• adj. Human; belonging to man, who is mortal.
• adj. Very painful or tedious; wearisome.
• adj. (Britain, slang) Very drunk; wasted; smashed.
• n. A human; someone susceptible to death.