speculative

Etymology

It is inherited from Middle English speculatif,^[2][3][4][5] borrowed from Old French speculatif (“theoretical”)^[6][5][2][3] and directly borrowed from Late Latin speculātīvus,^[6][5][2][7] from Latin speculātus, the past participle of speculor (“to observe, spy out”),^[3][5][6] from specula (“watchtower”), from speciō (“to look at”), from Proto-Indo-European *spek- (“to observe”).^[8][5] The Anglo-Norman adjective is recorded from about 1334, meaning theoretical rather than practical.^[9] The OED compares Italian speculativo and Spanish especulativo.^[6]

Earliest recorded meaning

Theoretical, based on theory rather than practice: about 1380, in Wyclif, of knowledge,^[6][5] and about 1400 in Lanfranc's Cirurgie, of the branches of a science.^[6] In Middle English speculatif was also a noun for theoretical knowledge.^[2]

Semantic evolution

From the 16th century the word described people given to theorizing (1543) and a life spent in contemplation (1578);^[6] Etymonline dates the sense "contemplative" to the late 15th century.^[5] Johnson (1755) defined it first as "given to speculation; contemplative".^[10] Close to its Latin root, it could also mean "optical" (1656) and, in poetry, "suitable for keeping watch" (1709).^[6] The financial sense, of people engaging in commercial speculation, arose in 1763,^[6][5] and was extended to ventures and investments in 1799.^[6] The Shorter Oxford records speculative fiction for science fiction and fantasy, and speculative grammar for a late medieval theory of grammar.^[7]

Timeline

• c. 1380 – theoretical, of knowledge, in Wyclif.^[6]
• c. 1400 – of a branch of science, theoretical.^[6]
• 1543 – of persons, given to speculation.^[6]
• 1578 – of life, spent in speculation.^[6]
• 1656 – optical (obsolete).^[6]
• 1763 – engaged in financial speculation.^[6][5]
• 1799 – of ventures, involving speculation.^[6]
• 1890 – forming an object of speculation.^[6]

Meanings

Adjective

1. Based on conjecture or theory rather than on evidence or demonstration: a speculative account of the poet's early years.^{[8][4][6][11]}
2. Inclined to theorize or to make guesses.^[4][6][8]
3. Involving financial speculation or risky investment: speculative shares.^[8][11][6]
4. Showing curious interest: She gave him a speculative look.^[8]

Word family

• speculatively
• speculativeness
• antispeculative
• hyperspeculative
• nonspeculative
• overspeculative
• unspeculative

Related words

• speculate
• speculation

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ 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)
3. ^ a b c Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
4. ^ a b c Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
5. ^ a b c d e f g h i Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
6. ^ a b c d e f g h i j k l m n o p q r s t u Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
7. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
8. ^ a b c d e The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
9. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
10. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
11. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins