Etymologically

similar

Etymology and origin of the English word similar

Confidence
Established
Formation
Borrowing
First attested
1611 (Cotgrave)
Borrowed from
French similaire
Ultimate origin
Latin (similis)

Pronunciation

  • IPA: UK /ˈsɪm.ɪ.lə/, US /ˈsɪm.ə.lɚ/[1]

Etymology

It is borrowed from French similaire,[2][3][4] perhaps also from Medieval Latin *similāris, an extended form of Latin similis (“like, resembling, of the same kind”).[2][3][5] Latin similis is from Old Latin semol (“together”),[3][6] from Proto-Indo-European *sem- (“one; as one, together with”).[3][4][7] An earlier form, similary, is recorded from the 1560s.[3][2][7] It is related to same, simile, assimilate, resemble and simulate.[2][6][8]

Earliest recorded meaning

Having a marked likeness, of a like kind: 1611, in Cotgrave's dictionary.[2][9][10]

Semantic evolution

Chiefly in anatomy, similar also meant “of the same substance throughout, homogeneous”, from 1626 to the early 18th century.[9][5][8] In mathematics, similar figures, with equal angles and proportional sides, are recorded from 1704.[9] In music, similar motion, in which voices move in the same direction, is from 1861.[9] The noun “that which is similar” is from the 1650s,[3] or 1654 according to Merriam-Webster.[11] Similarity is from 1664.[2] In Perthshire dialect, similar the same meant “nearly the same”.[12]

Timeline

  • 1560s – earlier form similary.[3]
  • 1611 – having a resemblance (Cotgrave).[2][9]
  • 1626 – homogeneous (obsolete).[9]
  • 1650s – noun, something similar.[3]
  • 1664 – similarity.[2]
  • 1704 – in geometry.[9]
  • 1861 – similar motion in music.[9]

Modern meaning

Adjective

  1. Alike in appearance or nature, though not identical.
  2. (geometry) Having equal corresponding angles and proportional sides.

Noun

  1. Something similar to another.

Word family

  • similarly
  • nonsimilar
  • unsimilar
  • self-similar
  • similarity
  • dissimilar
  • same
  • simile
  • assimilate
  • resemble
  • simulate
  • semblance

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 Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b c d e f g h Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b The American Heritage Dictionary of the English Language (2000), 4th ed., Boston: Houghton Mifflin
  5. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  6. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  7. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  8. ^ a b Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
  9. ^ a b c d e f g h Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  10. ^ Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
  11. ^ Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  12. ^ 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

“Similar.” Etymologically, 15 Oct. 2026, etymologically.com/en/similar. Accessed 15 Oct. 2026.

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