Etymologically

speculation

Etymology and origin of the English word speculation

Confidence
Established
Formation
Borrowing
First attested
c. 1374
Borrowed from
Old French speculacion
Ultimate origin
Late Latin (speculatio)

Pronunciation

  • IPA: /ˌspek.jəˈleɪ.ʃən/, /ˌspek.jʊˈleɪ.ʃən/[1]

Etymology

It is borrowed from Old French speculacion (“close observation, rapt attention”) and directly from Late Latin speculātiō, contemplation, a spying out,[2][3] from the past participle of Latin speculārī, to spy out, observe,[2][3] from specere, to look at (see speculate and spectacle).[2]

Earliest recorded meaning

Contemplation or profound study of a subject: about 1374 in the OED, the late 14th century in Etymonline.[4][2]

Semantic evolution

Pursuing truth by thinking is from the mid-15th century,[2] and in Middle English it could also mean theory as opposed to practice.[2] The faculty of sight (1471) and seeing or looking (1509) are obsolete senses.[4] The disparaging sense, mere conjecture, is from the 1570s.[2] Buying and selling in the hope of profiting from changes in market value is from 1774,[2] with the short form spec from 1794.[2]

Timeline

  • c. 1374 – contemplation.[4]
  • 1471 – sight (obsolete).[4]
  • 1570s – conjecture.[2]
  • 1774 – financial speculation.[2]
  • 1794 – spec.[2]

Modern meaning

Noun

  1. The forming of opinions or theories without firm evidence; conjecture.
  2. An opinion or theory reached in this way.
  3. Investment that carries a high risk in the hope of large profits.
  4. Contemplation or deep thought on a subject.

Word family

  • antispeculation
  • nonspeculation
  • overspeculation
  • prespeculation

References

  1. ^ Jones, Daniel (2011), Cambridge English Pronouncing Dictionary, 18th ed., ed. Peter Roach, Jane Setter and John Esling, Cambridge: Cambridge University Press
  2. ^ a b c d e f g h i j k l Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  4. ^ a b c d Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press

Related etymologies

Cite this entry

“Speculation.” Etymologically, 17 Oct. 2026, etymologically.com/en/speculation. Accessed 17 Oct. 2026.

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