torpor

Etymology

It is borrowed from Latin torpor (“numbness, sluggishness”),^[2][3][4][5] from torpeō (“to be numb, stiff or inactive”),^[3][5][6][7] from Proto-Indo-European *ster- (“stiff”).^[3][5] The Latin verb also gave torpid and torpedo.^[8][9] Sources differ on when the word entered English: the MED's first example comes from about 1230, though it notes that this could also be read as the Latin word,^[10] Etymonline dates it about 1200,^[3] Merriam-Webster to the 13th century^[6] and the Shorter Oxford to late Middle English,^[11] while the OED and Barnhart begin with 1607.^[2][4]

Earliest recorded meaning

Physical inactivity or sluggishness: about 1230, in Ancrene Wisse, where torpor heads the offspring of the bear of sloth and is glossed as a lukewarm heart with no desire for anything.^[10]

Semantic evolution

The first English uses already apply to spiritual sloth in Ancrene Wisse and to a slowing of the body in the Middle English Chauliac.^[10] In the OED's record, intellectual or spiritual lethargy comes first, in 1607,^[2] and the suspension of activity or feeling follows in Bacon in 1626, where solid bodies have a natural torpor that motion dispels.^[2][12] Johnson (1755) defined it as dullness, numbness and inability to move.^[12] Pathology took it up for morbid inertia,^[2] and in biology it now names the inactive state of an animal in great heat or cold, or in hibernation or estivation.^[11][5] The adjective torporific, stupefying, is recorded from 1738,^[3] and the verb torpefy from 1808.^[3]

Timeline

• c. 1230 – physical inactivity, sluggishness, as an offshoot of sloth, in Ancrene Wisse.^[10]
• 1607 – intellectual or spiritual lethargy, apathy.^[2][4]
• 1626 – absence or suspension of motive power or activity, in Bacon.^[2]
• 1806 – in combinations such as torpor-shedding.^[2]

Meanings

Noun

1. A state of physical or mental inactivity; lethargy: A heavy torpor settled over the town in the August heat.^[13][5][14]
2. Mental or spiritual sluggishness; apathy.^[6][5]
3. (medicine) A state of sluggishness and low responsiveness, with partial or total insensibility, less marked than stupor.^[11][6]
4. (biology) The dormant state of an animal in hibernation or estivation, or in conditions of great heat or cold.^[5][11]

Word family

• torporific

Related words

• torpidity
• torpid
• torpedo

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ a b c Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
5. ^ a b c d e f g The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
6. ^ a b c d Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
7. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
8. ^ Merriam-Webster's Book of Word Histories, Springfield, Mass.: Merriam-Webster
9. ^ Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
10. ^ a b c d Kurath, Hans; Kuhn, Sherman M.; Lewis, Robert E., eds. (1952–2001), Middle English Dictionary, Ann Arbor: University of Michigan Press; online edition ed. Frances McSparran et al. (2000–2018)
11. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
12. ^ a b Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
13. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
14. ^ Collins English Dictionary (2023), Glasgow: HarperCollins