Etymologically

suppose

Etymology and origin of the English word suppose

Confidence
Established
Formation
Borrowing
First attested
c. 1303
Borrowed from
Old French supposer via Middle English
Ultimate origin
Latin (supponere)

Pronunciation

  • IPA: UK /səˈpəʊz/, US /səˈpoʊz/[1]

Etymology

It is inherited from Middle English supposen,[2][3][4] borrowed from Old French supposer (“to assume”) (13th century),[2][3] probably a replacement, under the influence of poser “to put, place”, of *suppondre,[2][3][4] from Latin suppōnere (“to put under; to subordinate”),[2][3][5] which in Medieval Latin also meant “to suppose, assume”,[4][3] from sub “under” and pōnere “to put, place”.[2][3] It is related to pose, position and supposition.[3][2]

Earliest recorded meaning

To hold an opinion, assume, incline to think: about 1303 in Barnhart, in Mannyng's Handlyng Synne;[3] about 1300 in Etymonline, also “to make a hypothesis”;[2] 1340 in the OED.[6]

Semantic evolution

To imagine or conceive is from about 1386,[6] and parenthetical I suppose from 1390.[6] To admit as possible, believe without reflection, is from the 1520s,[2] and to infer hypothetically from about 1600.[2][7] The noun suppose, a supposition, was used from 1566 but is now obsolete.[6] Supposed as an adjective is from 1582,[3] and supposedly from 1611.[3] Supposition is from 1410.[3] In the dialects of Scotland and the English Midlands suppose was used as a conjunction meaning “even if”.[8]

Timeline

  • c. 1303 – to hold an opinion.[3]
  • c. 1386 – to imagine.[6]
  • 1410 – supposition.[3]
  • 1520s – to believe without reflection.[2]
  • 1566 – noun (obsolete).[6]
  • 1582 – supposed.[3]
  • c. 1600 – to infer hypothetically.[2]

Modern meaning

Verb

  1. To believe or assume, especially on uncertain grounds.
  2. To take as true for the sake of argument: suppose it rains.
  3. To consider likely; to expect.
  4. To require as a condition; to presuppose.
  5. be supposed to: to be expected or required to.

Word family

  • supposable
  • supposably
  • supposer
  • missuppose
  • supposal
  • pose
  • position
  • supposition
  • suppository
  • presuppose

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 Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e f g h i j k l m n Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  4. ^ a b c Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  5. ^ Pearsall, Judy, ed. (1998), The New Oxford Dictionary of English, Oxford: Clarendon Press
  6. ^ a b c d e f Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  8. ^ Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)

Related etymologies

Cite this entry

“Suppose.” Etymologically, 15 Oct. 2026, etymologically.com/en/suppose. Accessed 16 Oct. 2026.

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