Etymologically

Etymology and origin of the English word ardor

Confidence
Established
Formation
Borrowing
First attested
c. 1390 Chaucer, Canterbury Tales More words from the 14th century
Borrowed from
Anglo-Norman ardure via Middle English
Ultimate origin
Proto-Indo-European *as-
Etymology tree
inherited borrowed derived
Latin āreō
Latin āridus
English arid
Latin ārdeō
Latin ārdor
English ardor
From the same root
Latin ārēscō ← āreō
Latin āriditās ← āridus
Latin ārdēscō ← ārdeō
Latin exārdeō ← ārdeō

Pronunciation

  • UK: /ˈɑːdə/[1]
  • US: /ˈɑːɹdɚ/[1]

Etymology

It is inherited from Middle English ardour, also ardure,[2][3][4] borrowed from Anglo-Norman ardure and Old French ardour,[2][5][4] from Latin ārdor (“a flame, burning heat; eagerness, zeal”),[2][6][7] from ārdeō (“to burn”),[2][6][7] from Proto-Indo-European *as- (“to burn, glow”).[6][4] The MED and Merriam-Webster also allow the Latin noun as a direct source,[3][7] and Dictionary.com takes the Middle English form from Latin, replacing ardure, and ardour from Anglo-French in the 17th century.[8] Etymonline names ardure (“heat, glow; inflammation; passion”) of the 12th century as the source.[6] The Latin verb is akin to āreō (“to be dry”) and āridus (“dry”), the source of arid,[7][2] and also to Old High German essa (“forge”) and Old Norse arinn (“hearth”).[7] Its modern descendant is French ardeur.[9][6]

Earliest recorded meaning

Heat of feeling: about 1390, in Chaucer's Canterbury Tales, according to Barnhart;[2] the Parson's Tale has ardure for the heat of lechery.[3][10] Etymonline finds it only in the mid-15th century.[6] Collins, Merriam-Webster and Dictionary.com all date it to the 14th century.[5][7][8]

Semantic evolution

Anglo-Norman ardure could already mean burning, inflammation, zeal and sexual passion from the 12th century on.[11] The MED records the English word for spiritual love (ardowr of lofe, before 1438), for the heat of sexual desire, and for a burning sensation.[3] Etymonline notes that in Middle English it was used of base passions, and of noble ones since Milton's time.[6] Johnson (1755) listed heat first, then the heat of affection, "as love, desire, courage", and last a sense used only by Milton, of the radiant angels of Paradise Lost: “thousand celestial ardours”.[12][9]

Timeline

  • c. 1390 – heat of feeling, in Chaucer.[2][3]
  • before 1438 – of spiritual love: ardowr of lofe.[3]
  • 16th century – the spelling ardor, influenced by Latin, replaces ardour and ardure, according to Barnhart.[2]
  • mid-17th century – a radiant spirit, in Milton (obsolete).[9][12]

Meanings

Noun

  1. Great warmth of feeling; passion, especially love: His ardor faded soon after the wedding.[5][7][9]
  2. Zeal, eagerness: her ardor for chess.[5][7]
  3. Extreme vigor or intensity.[7]
  4. (archaic) Fierce or burning heat.[9][12]
  5. (obsolete) A radiant spirit, as an angel.[9][12]

Usage notes

Ardor is the American spelling and ardour the British one.[5][8][9]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b c d e f 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)
  4. ^ a b c The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  5. ^ a b c d e Collins English Dictionary (2023), Glasgow: HarperCollins
  6. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  7. ^ a b c d e f g h i Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  8. ^ a b c Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  9. ^ a b c d e f g Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  10. ^ Benson, Larry D., Glossarial Concordance to Middle English (Chaucer, Gower), Johns Hopkins University, github.com/jhu-digital-manuscripts/gcme
  11. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
  12. ^ a b c d Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.

Related etymologies

Cite this entry

“Ardor.” Etymologically, 5 Nov. 2026, etymologically.com/en/ardor. Accessed 5 Nov. 2026.

Last edited on . ·