English Reference
adjective · noun

mortal

adj. · n.
US /ˈmɔɹtəɫ/ UK /mˈɔːtəl/ mor·tal UK spelling mortals

  1. 01 B2 Upper Intermediate

    adj.living things that cannot live forever and will eventually die.

    adj.subject to death; having a finite lifespan as a biological necessity.

    Simple

    All living creatures are mortal and will one day pass away.

    In context

    The poet reflects on our mortal nature, contrasting the brief span of human life with the enduring beauty of the natural world.

  2. 02 B2 Upper Intermediate

    adj.something that causes death, like a very serious wound or injury.

    adj.causing or liable to cause death; fatal or lethal in effect.

    Simple

    The soldier received a mortal wound during the final battle.

    In context

    The knight collapsed after sustaining a mortal blow that no physician of the era could hope to treat.

  3. 03 C1 Advanced Literary

    adj.used to describe a very strong feeling, like a great fear or a serious enemy.

    adj.extreme, intense, or unrelenting; often used to describe human emotions or rivalries that last until death.

    Simple

    The two families had been mortal enemies for many generations.

    In context

    He was seized by a mortal terror as the shadow moved across the window, paralyzing him where he stood.

  4. 04 C2 Proficiency SlangBritish EnglishDialect

    adj.extremely drunk from drinking too much alcohol.

    adj.highly intoxicated; a regional slang term used primarily in parts of the UK.

    Simple

    He went out for one drink and ended up absolutely mortal.

    In context

    After the wedding reception, half the guests were completely mortal and had to be helped into taxis.

  5. 05 C1 Advanced TechnicalFormal Religion

    adj.in some religions, a very serious wrong act that separates a person from God.

    adj.denoting a grave sin that is believed to cause the death of grace in the soul.

    Simple

    In the church's teaching, stealing a large amount of money is a mortal sin.

    In context

    The theologian argued that for a transgression to be considered a mortal sin, it must involve grave matter and full consent of the will.

    venial
  6. 06 B2 Upper Intermediate

    n.a human being, especially when compared to a god or someone who lives forever.

    n.a human being, as distinct from a divine or immortal entity.

    Simple

    The secret was too powerful for any mere mortal to know.

    In context

    The ancient myths often depict gods descending from the heavens to interfere in the messy affairs of ordinary mortals.

Are they an army of mortals, gods, automatons or lines of code?

The Guardian· 30 Aug 2026

From Middle English mortal, mortel, from Old French mortal, and their source Latin mortālis, from mors (“death”). In this sense, displaced native deadly, from Old English dēadlīċ.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin mortālis
Level B2 · Upper Intermediate
Frequency Frequent
Updated