Dictionary.com
Thesaurus.com
Synonyms

mortal

American  
[mawr-tl] / ˈmɔr tl /

adjective

  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.


noun

mortals plural
  1. a human being.

  2. the condition of being subject to death.

mortal British  
/ ˈmɔːtəl /

adjective

  1. (of living beings, esp human beings) subject to death

  2. of or involving life or the world

  3. ending in or causing death; fatal

    a mortal blow

  4. deadly or unrelenting

    a mortal enemy

  5. of or like the fear of death; dire

    mortal terror

  6. great or very intense

    mortal pain

  7. possible

    there was no mortal reason to go

  8. slang long and tedious

    for three mortal hours

"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

noun

  1. a mortal being

  2. informal a person

    a mean mortal

"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

Synonym Usage

See fatal.

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of mortal

First recorded in 1325–75; Middle English, Middle French mortal, mortel, from Latin mortālis, equivalent to mort- (stem of mors ) “death” + -ālis -al 1; see ambrosia ( def. ); murder ( def. ); murther ( def. )

Explanation

You are a mortal because you are mortal. This means that you are an individual destined to die because you are susceptible to death. The word mortal has one of the most ancient genealogies of any word in English or any other language. It is related to English words like "murder" and "mortuary," and to the French, Italian, Spanish, and Russian words for "death." Something that can kill you can also be described as mortal. If you're in mortal danger, you're in a deadly situation. Action heroes often think they are dealing their enemy a mortal blow, but sometimes the enemy manages to come back to life. People are called mortals because at some point, they die.

Keep Reading on Vocabulary.com

Vocabulary lists containing mortal

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

And, while it would be easier for you to slip this mortal coil and leave your assets in the hands of your sons to do with that money as they please, it’s your money.

From MarketWatch • Jun. 23, 2026

But lest anyone confuse him with a mortal, he followed up with a pair of goals to become the tournament’s all-time leading scorer.

From Slate • Jun. 22, 2026

An international footballer, yes, but in those moments of magic from the great man, just another mortal.

From BBC • Jun. 18, 2026

He’s also as mortal as the rest of us.

From Salon • May 24, 2026

Ishtar shines with the joy of battle, and she remembers what it is to be a goddess, to hold mortal fates in her hands.

From "City of the Plague God" by Sarwat Chadda

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "mortal" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com