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See more synonyms for mortal on Thesaurus.com
  1. subject to death; having a transitory life: all mortal creatures.
  2. of or relating to human beings as subject to death; human: this mortal life.
  3. belonging to this world.
  4. deadly or implacable; relentless: a mortal enemy.
  5. severe, dire, grievous, or bitter: in mortal fear.
  6. causing or liable to cause death; fatal: a mortal wound.
  7. to the death: mortal combat.
  8. of or relating to death: the mortal hour.
  9. involving spiritual death (opposed to venial): mortal sin.
  10. long and wearisome.
  11. extreme; very great: in a mortal hurry.
  12. conceivable; possible: of no mortal value to the owners.
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  1. a human being.
  2. the condition of being subject to death.
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Origin of mortal

1325–75; Middle English < Latin mortālis, equivalent to mort- (stem of mors) death + -ālis -al1
Related formsmor·tal·ly, adverbnon·mor·tal, adjective, nounnon·mor·tal·ly, adverbpost·mor·tal, adjectivepost·mor·tal·ly, adverbpre·mor·tal, adjectivepre·mor·tal·ly, adverbun·mor·tal, adjective


See more synonyms for on Thesaurus.com
6. See fatal.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for mortally

Contemporary Examples

Historical Examples

  • He'd be dead of fright before morning, he's so mortally afraid of ghosts.

    The Channings

    Mrs. Henry Wood

  • As for the canon, I am afraid I have offended him mortally by sticking up for you.

    People of Position

    Stanley Portal Hyatt

  • The princess had mortally offended her father-in-law's favourite.

  • They had evidently been mortally wounded, and died while waiting for help.

    War from the Inside

    Frederick L. (Frederick Lyman) Hitchcock

  • Unless she went warily he might find that out and be mortally offended.

    Love and Lucy

    Maurice Henry Hewlett

British Dictionary definitions for mortally


  1. (of living beings, esp human beings) subject to death
  2. of or involving life or the world
  3. ending in or causing death; fatala mortal blow
  4. deadly or unrelentinga mortal enemy
  5. of or like the fear of death; diremortal terror
  6. great or very intensemortal pain
  7. possiblethere was no mortal reason to go
  8. slang long and tediousfor three mortal hours
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  1. a mortal being
  2. informal a persona mean mortal
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Derived Formsmortally, adverb

Word Origin

C14: from Latin mortālis, from mors death
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for mortally


late 14c., "to the death; resulting in death," also "bitterly, intensely," from mortal (adj.) + -ly (2).

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mid-14c., "deadly," also "doomed to die," from Old French mortel "destined to die; deserving of death," from Latin mortalis "subject to death, mortal, of a mortal, human," from mors (genitive mortis) "death," from PIE base *mer- "to die," with derivatives referring to death and human beings" (cf. Sanskrit mrtih "death," martah "mortal man;" Avestan miryeite "dies," Old Persian martiya- "man;" Armenian meranim "die;" Latin mori "to die;" Lithuanian mirtis "mortal man;" Greek brotos "mortal" (hence ambrotos "immortal"); Old Church Slavonic mrutvu "dead;" Old Irish marb, Welsh marw "died;" Old English morþ "murder"). The most widespread Indo-European root for "to die," forming the common word for it except in Greek and Germanic. Watkins says it is "possibly" the same as PIE *mer- "rub, pound, wear away" (see morbid).

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"mortal thing or substance," 1520s, from mortal (adj.). Latin mortalis also was used as a noun, "a man, mortal, human being."

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Online Etymology Dictionary, © 2010 Douglas Harper

mortally in Medicine


  1. Liable or subject to death.
  2. Causing death; fatal.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.