from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Liable or subject to death; not immortal.
  • adjective Of or relating to humans as being subject to death.
  • adjective Causing death; fatal: synonym: fatal.
  • adjective Fought to the death.
  • adjective Relentlessly hostile; implacable.
  • adjective Of great intensity or severity; dire.
  • adjective Conceivable; imaginable.
  • adjective Used as an intensive.
  • noun A human.

from The Century Dictionary.

  • Extremely; excessively; perfectly: as, mortal angry; mortal drunk.
  • Subject to death; destined to die.
  • Human; of or pertaining to man, who is subject to death: as, mortal knowledge; mortal power.
  • Deadly; destructive to life; causing death, or that may or must cause death; fatal.
  • Deadly; implacable; to the death; such as threatens life: as, mortal hatred.
  • Such that injury or disease affecting it may cause death.
  • Bringing death; noting the time of death.
  • Incurring the penalty of spiritual death; inferring divine condemnation: opposed to venial: as, a mortal sin (see sin).
  • Extreme; very great or serious: as, mortal offense.
  • Long and uninterrupted; felt to be long and tedious.
  • Euphemistically, confounded; cursed: as, not a mortal thing to eat.
  • Drunk.
  • noun Man, as a being subject to death; a human being.
  • noun That which is mortal.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Subject to death; destined to die.
  • adjective Destructive to life; causing or occasioning death; terminating life; exposing to or deserving death; deadly
  • adjective Fatally vulnerable; vital.
  • adjective Of or pertaining to the time of death.
  • adjective Affecting as if with power to kill; deathly.
  • adjective Human; belonging to man, who is mortal.
  • adjective colloq. Very painful or tedious; wearisome.
  • adjective an inveterate, desperate, or implacable enemy; a foe bent on one's destruction.
  • noun A being subject to death; a human being; man.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A human; someone susceptible to death.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective subject to death
  • noun a human being
  • adjective involving loss of divine grace or spiritual death
  • adjective unrelenting and deadly
  • adjective causing or capable of causing death


from The American Heritage® Dictionary of the English Language, 4th Edition

Middle English, from Old French, from Latin mortālis, from mors, mort-, death; see mer- in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Anglo-Norman mortal, Middle French mortal, and their source Latin mortālis, from mors ("death").



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  • contronymic: fatal as in "mortal blow";living beings, "mortals"

    December 10, 2006