Etymologically

mortal

Etymology and origin of the English word mortal

Confidence
Established
Formation
Borrowing
First attested
c. 1374
Borrowed from
Old French mortal via Middle English
Ultimate origin
Proto-Indo-European (*mer-)

Pronunciation

  • IPA: /ˈmɔː.təl/ (UK); /ˈmɔɹ.təl/ (US)[1]

Etymology

It is inherited from Middle English mortal, borrowed from Old French mortal (also mortel (“destined to die”)) and directly Latin mortālis (“subject to death”),[2][3][4] from mors (“death”) (stem mort-),[2][3] from Proto-Indo-European *mer- (“to rub away, harm; to die”),[3][4] also the source of Ancient Greek βροτός (brotós, “mortal”).[4]

Earliest recorded meaning

Subject to death: about 1374 in the OED, about 1380 in Barnhart; deadly or grievous about 1370 in Barnhart; all first found in Chaucer.[5][2]

Semantic evolution

Causing death, deadly, is from about 1385,[5] now used only of diseases and wounds.[5] Of a sin, deserving damnation, it is from the 15th century.[4] Trench notes that the active sense, deadly, has nearly departed from mortal, while the passive has departed from deadly.[6] The noun, a human being in contrast with an immortal, is from 1567,[5][3] used playfully for a person from 1718.[5] As an intensive, every mortal thing, it is colloquial and dialectal.[7][8]

Timeline

  • c. 1370 – deadly, grievous.[2]
  • c. 1374 – subject to death.[5]
  • 15th century – mortal sin.[4]
  • 1567 – a mortal (noun).[5]
  • 1718 – a person (playful).[5]

Modern meaning

Adjective

  1. Subject to death; not immortal.
  2. Causing death; fatal: a mortal wound.
  3. Deadly or unrelenting: a mortal enemy.
  4. Very great or intense: in mortal fear.

Noun

  1. A human being, as opposed to a god.

Word family

  • mortally
  • nonmortal
  • postmortal
  • premortal
  • mortality
  • mortal sin

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b c d e Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  5. ^ a b c d e f g h Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  6. ^ Trench, Richard Chenevix (1859), A Select Glossary of English Words Used Formerly in Senses Different from Their Present, London: John W. Parker
  7. ^ The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
  8. ^ Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)

Related etymologies

Cite this entry

“Mortal.” Etymologically, 17 Oct. 2026, etymologically.com/en/mortal. Accessed 17 Oct. 2026.

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