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.

See Examples For:

The movie, starring Amelia Eve, Brandon Perea and Maisie Richardson-Sellers, follows the story of a young woman who can bring spirits into the mortal world but is herself haunted.

From Barron's Aug. 23, 2026

During his early days as an assistant at Barcelona, he took mortal offense to being known as “The Translator”—though one of his primary duties did involve repeating his English manager’s instructions in Spanish.

From The Wall Street Journal Aug. 18, 2026

When Lestat is made to reckon with what’s presented as “failures” in both his mortal and immortal lives, he can’t quite own up to being a true monster, because that’s not what he really is.

From Salon Jul. 21, 2026

Unlike in Homer or even “Clash of the Titans,” which showed the gods as toga-clad twits toying with mortal lives like action figures, they have little, if anything, to do in this plot.

From Los Angeles Times Jul. 15, 2026

“Yes, mortal bodies are terribly bulky,” Favonius said, as if reading his thoughts.

From "The House of Hades" by Rick Riordan

“Orville and I concluded that mortals should not own land like this,” Niman said.

From Los Angeles Times Aug. 16, 2026

However, Huppert emphasised the social symbolism of a vampire aristocracy that draws its power by feeding on ordinary mortals.

From Barron's Feb. 18, 2026

There’s a wicked irony in micromanaging your entire life on Earth only to croak and have your soul potentially jettisoned to some formless state of being, entirely unknown to mere mortals.

From Salon Nov. 27, 2025

It’s not just us mere mortals trying to wrap our brains around these mind-boggling numbers, as one of the world’s biggest hedge funds seems dumbfounded.

From MarketWatch Oct. 22, 2025

There are two ways for mortals to become permanent subjects of the Court: marrying into it or honing some great skill—in metallurgy or lute playing or whatever.

From "The Cruel Prince" by Holly Black

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training