Etymologically

Etymology and origin of the English word opportune

Confidence
Established
Formation
Borrowing
First attested
c. 1425 Lydgate, Troy Book More words from the 15th century
Borrowed from
Middle French opportun via Middle English
Ultimate origin
Latin portus
Etymology tree
inherited borrowed derived
Latin opportūnus
English opportune
From the same root
Latin opportune ← opportūnus
Latin opportūnitās ← opportūnus

Pronunciation

  • UK: /ɒ.pəˈt͡ʃ(j)uːn/[1]
  • US: /ˌɑ.pɚˈtuːn/, /-tjuːn/[1]

Etymology

It is inherited from Middle English opportune,[2][3] borrowed from Middle French opportun (“suitable, fitting”),[4][3] which others call Old French,[5][6][7][8][2] recorded from about 1355,[4] and directly borrowed from Latin opportūnus (“fit, convenient, timely”).[4][5][6][2] Anglo-Norman has the adjective from 1382.[9] The Latin adjective was originally a sailors' word for a wind blowing towards harbour.[4][10][11] Most dictionaries derive it from the phrase ob portum veniēns (“coming toward a port”),[5][6][7][3] with ob (“toward”) and portus (“harbour”), the source of port,[5][7][3][8] and the American Heritage Dictionary carries the noun back to the root Proto-Indo-European *per-.[7] The OED instead forms it from ob- and Portūnus, the name of the protecting god of harbours, probably an adjective at first.[4][10] Dictionary.com takes the second part as the stem of the Latin noun in its sense "access".[12] Compare Italian opportuno, Spanish oportuno and Portuguese oportuno.[4]

Earliest recorded meaning

Suitable, convenient, of a time or a place: the OED's first records are from Lydgate's Troy Book, about 1425.[4][2] Barnhart cites an earlier Lydgate poem, Reson and Sensuallyte, probably about 1408,[6] and Etymonline gives about 1400.[5]

Semantic evolution

In English the word has been used since medieval times of what comes at a good or convenient time,[11] and the Middle English Dictionary glosses it as convenient, appropriate, suitable or favourable.[2] Two 15th-century senses have died out: "advantageous, useful" (before 1475 to 1658) and "open or liable to attack" (before 1500 to 1667), the latter in Milton's "The Woman opportune to all attempts".[4][10] From about 1425 the word also described an event or action fitting its circumstances, and in later use chiefly one happening at a favourable moment.[4][10] Johnson (1755) defined it with a row of near-synonyms led by seasonable, and quotes Bacon's "an opportune death".[13] Thackeray used it in 1853 for something adopted on grounds of expediency, a rare sense that looks towards opportunism.[4][10] The OED also records a verb made from the adjective, from 1606, including in the 20th century a use by confusion with importune and another, by association with opportunity, to grant the chance.[4]

Timeline

  • c. 1425 – of a time or a place, appropriate or convenient; of an event, fitting or favourable.[4][2]
  • before 1475 – advantageous, useful (obsolete after 1658).[4][10]
  • before 1500 – liable or open to attack or injury (obsolete after 1667).[4][10]
  • 1606 – verb, to have the opportunity (obsolete, and rare).[4]
  • 1667 – adverb, opportunely (obsolete after 1882).[4]
  • 1853 – adopted for reasons of expediency.[4][10]
  • 1941 – verb, to importune.[4]
  • 1980 – verb, to grant the opportunity.[4]

Meanings

Adjective

  1. Happening at a suitable or advantageous time; timely: Her offer of a lift could not have been more opportune.[3][14][10]
  2. Fit or convenient for a particular purpose or occasion: They waited for an opportune moment to leave.[3][14][4]
  3. (rare) Adopted for reasons of expediency.[4][10]
  4. (obsolete, before 1475–1658) Advantageous, useful.[4][3][10]
  5. (obsolete, before 1500–1667) Open or liable to attack or injury; exposed.[4][3][10]

Adverb

  1. (obsolete, 1667–1882) Opportunely.[4][10]

Word family

  • opportunely
  • opportuneness
  • opportunism
  • opportunist
  • unopportune

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ 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)
  3. ^ a b c d e f g h Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  4. ^ a b c d e f g h i j k l m n o p q r s t u v w x Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  5. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  6. ^ a b c d Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  7. ^ a b c d The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  8. ^ a b Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
  9. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
  10. ^ a b c d e f g h i j k l m Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  11. ^ a b Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
  12. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  13. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
  14. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins

Related etymologies

Cite this entry

“Opportune.” Etymologically, 5 Nov. 2026, etymologically.com/en/opportune. Accessed 5 Nov. 2026.

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