mortal

1 of 3

adjective

mor·​tal ˈmȯr-tᵊl 

1

: causing or having caused death : fatal

a mortal injury

2

a

: subject to death

mortal man

Every living creature is mortal.

b

: possible, conceivable

have done every mortal thing

c

: deadly sense 3

waited three mortal hours

3

: marked by unrelenting hostility

a mortal enemy

4

: marked by great intensity or severity

mortal fear

5

: human

mortal limits

a nobody with an all too mortal longing to be a somebody

—Time

6

: of, relating to, or connected with death

mortal agony

mortal

2 of 3

adverb

chiefly dialectal

: mortally

mortal

3 of 3

noun

: a human being

Synonyms

Adjective

• baleful
• deadly
• deathly
• fatal
• fell
• killer
• lethal
• murderous
• pestilent
• terminal
• vital

Noun

• baby
• being
• bird
• bod [British]
• body
• character
• cookie
• cooky
• creature
• customer
• devil
• duck
• egg
• face
• fish
• guy
• head
• human
• human being
• individual
• life
• man
• party
• person
• personage
• scout
• slob
• sort
• soul
• specimen
• stiff
• thing
• wight

Choose the Right Synonym for mortal

deadly, mortal, fatal, lethal mean causing or capable of causing death.

deadly applies to an established or very likely cause of death.

a deadly disease

mortal implies that death has occurred or is inevitable.

a mortal wound

fatal stresses the inevitability of what has in fact resulted in death or destruction.

fatal consequences

lethal applies to something that is bound to cause death or exists for the destruction of life.

lethal gas

Examples of mortal in a Sentence

Adjective

Every living creature is mortal.

He suffered a mortal wound in the battle.

Noun

stories about gods interfering in the lives of mortals

the troubles that come to ordinary mortals

Recent Examples on the Web

Adjective

The comic edge of Bochner’s work partly derives from this downward pull of bodily functions and mortal flesh. —Jeffrey Weiss, Artforum, 1 May 2025

Blackwood pulled: Turns out Mackenzie Blackwood is mortal after all. —Sean Keeler, Denver Post, 28 Apr. 2025

Noun

Because of that treachery Castor was a pure mortal, but Pollux was a half god. —Mike Lynch, Twin Cities, 6 Apr. 2025

Because of that treachery Castor was a pure mortal, but Pollux was a half god. —Mike Lynch, Twin Cities, 6 Apr. 2025

Word History

Etymology

Adjective and Adverb

Middle English, from Anglo-French mortel, mortal, from Latin mortalis, from mort-, mors death — more at murder

Noun

see human entry 1

First Known Use

Adjective

14th century, in the meaning defined at sense 1

Adverb

15th century, in the meaning defined above

Noun

15th century, in the meaning defined above

Phrases Containing mortal

• mortal combat
• mortal enemy
• mortal foe/rival
• mortal mind
• mortal remains
• mortal sin

Rhymes for mortal

• quartile
• immortal

Kids Definition

mortal

1 of 2 adjective

mor·​tal ˈmȯrt-ᵊl 

1

: capable of causing death

a mortal wound

2

: certain to die

animals are mortal

3

: extremely unfriendly

a mortal enemy

4

: very great or severe

in mortal fear

5

: human entry 1 sense 1

mortal limitations

6

: of, relating to, or connected with death

mortal agony

mortally

-ᵊl-ē

adverb

mortal

2 of 2 noun

: a human being

Medical Definition

mortal

adjective

mor·​tal ˈmȯrt-ᵊl 

1

: having caused or being about to cause death : fatal

a mortal injury

2

: of, relating to, or connected with death

mortal agony