Etymologically

sincerity

Etymology and origin of the English word sincerity

Confidence
Established
Formation
Borrowing
First attested
early 15th century
Borrowed from
Latin sinceritas via Middle English
Ultimate origin
Latin (sincērus)

Pronunciation

  • IPA: /sɪnˈsɛɹɪti/ (UK)[1]

Etymology

It is inherited from Middle English sincerite,[2] from Old French sinceritie[2][3] and directly borrowed from Latin sinceritās (“purity, soundness, wholeness”),[2][4][3] from sincērus (“whole, clean; sound, genuine, pure”) (see sincere).[2][5]

Earliest recorded meaning

Honesty, genuineness (early 15th century in Etymonline; 15th century in Merriam-Webster).[2][6][5]

Semantic evolution

The Latin word meant purity or soundness,[2] and in 16th-century English sincerity could mean freedom from adulteration or falsification, purity, correctness (1546–1653, now obsolete).[7][8] The sense of freedom from deceit or duplicity, honesty, straightforwardness is recorded from 1557,[7][8] and the genuineness of feelings from 1611.[7][8] Johnson (1755) gives “honesty of intention; purity of mind” and “freedom from hypocrisy”.[9] The plural, sincere feelings or actions, dates from 1840.[7][4]

Timeline

  • early 15th century – honesty, genuineness (Etymonline).[2]
  • 1546 – purity, freedom from adulteration (obsolete).[7][8]
  • 1557 – freedom from deceit; honesty.[7][8]
  • 1611 – genuineness of feelings.[7][8]
  • 1840 – in the plural, sincere feelings or acts.[7]

Modern meaning

Noun

  1. The quality of being sincere; genuineness and honesty, freedom from duplicity or hypocrisy.
  2. A sincere feeling, or an expression of one (often plural).

Word family

  • supersincerity

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  4. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ a b Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  6. ^ Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
  7. ^ 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
  8. ^ a b c d e f Kay, Christian; Roberts, Jane; Samuels, Michael; Wotherspoon, Irené, eds. (2009), Historical Thesaurus of the Oxford English Dictionary, Oxford: Oxford University Press; online edition (2024)
  9. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.

Related etymologies

Cite this entry

“Sincerity.” Etymologically, 14 Oct. 2026, etymologically.com/en/sincerity. Accessed 15 Oct. 2026.

Last edited on . ·