Etymologically

Etymology and origin of the English word fortitude

Confidence
Established
Formation
Borrowing
First attested
c. 1175 Bodley Homilies
Borrowed from
Latin fortitudo via Middle English
Ultimate origin
Latin fortis
Etymology tree
inherited borrowed derived
Latin fortis
French fort
English forte
Italian forte
Latin fortitudo
English fortitude
From the same root
Latin conforto ← fortis
Latin fortia ← fortis
Latin fortiter ← fortis

Pronunciation

  • UK: /ˈfɔː.tɪˌtjuːd/[1]
  • US: /ˈfoɹ.tɪˌtud/[1]

Etymology

It is inherited from Middle English fortitude,[2][3][4] borrowed from Latin fortitūdō (“strength, firmness, courage”),[4][2][5][6][7] partly through Middle French fortitude, which the OED and Barnhart allow for,[8][7][9][10] from fortis (“strong, brave”) with the suffix -tūdō, English -tude.[6][7][5][3] Fortis, also the source of fort, comes from Old Latin forctus, of unknown origin;[6] Etymonline mentions Proto-Indo-European *bʰerǵʰ- (“high, elevated”) or Proto-Indo-European *dʰer- (“to hold firmly”) as possible roots,[6] and the American Heritage Dictionary refers it to the first.[4]

Earliest recorded meaning

Moral strength, as one of the four cardinal virtues: about 1175, in the Bodley homilies, in the Latin form fortitudo explained as "strength or steadfastness".[2][7] Chaucer's Parson's Tale (about 1390) also uses fortitudo.[2][7][11] Barnhart dates the form fortitude to 1422,[7] and the OED's first record, from before 1513, is in William Dunbar.[8]

Semantic evolution

In Middle English fortitude was both a moral virtue and plain physical strength or vigour.[2][6] The physical sense, used also of the strength of a place, lasted until about 1700;[8][5] Shakespeare could write of "the fortitude of the place".[5] Johnson (1755) defined it as courage, bravery and "power of acting or suffering well", quoting Macbeth.[12] The OED notes that the active sense, courage in facing danger, has since given way to the passive one, firm courage in bearing pain or adversity.[8] In astrology a fortitude was a position that strengthened a planet's influence (before 1549).[8] The phrase intestinal fortitude, courage or "guts", is recorded from about 1937.[5]

Timeline

  • c. 1175 – moral strength, one of the cardinal virtues, in the Latin form fortitudo.[2][7]
  • 1422 – the form fortitude.[7][2]
  • before 1513 – moral strength or courage, in Dunbar.[8]
  • before 1549 – in astrology, a position that strengthens a planet's influence.[8]
  • 1553 – physical or structural strength (obsolete after 1703).[8]
  • 1755 – Johnson defines it as courage and greatness of mind.[12]
  • c. 1937 – intestinal fortitude, courage, guts.[5]

Meanings

Noun

  1. Strength of mind that lets a person bear pain or adversity with courage; resolute endurance: She faced the long illness with great fortitude.[13][5][8]
  2. In Christian teaching, one of the four cardinal virtues.[8][10][2]
  3. (obsolete, 1553–1703) Physical or structural strength.[8][5]

Word family

  • fortitudinous
  • intestinal fortitude

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h 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)
  3. ^ a b Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  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 f g h Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  6. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  7. ^ a b c d e f g h Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  8. ^ a b c d e f g h i j k Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  9. ^ Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  10. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  11. ^ Benson, Larry D., Glossarial Concordance to Middle English (Chaucer, Gower), Johns Hopkins University, github.com/jhu-digital-manuscripts/gcme
  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. ^ Collins English Dictionary (2023), Glasgow: HarperCollins

Related etymologies

Cite this entry

“Fortitude.” Etymologically, 2 Nov. 2026, etymologically.com/en/fortitude. Accessed 2 Nov. 2026.

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