Etymologically

trust

Etymology and origin of the English word trust

Confidence
Probable
Formation
Borrowing
First attested
c. 1200 (Ancrene Riwle)
Borrowed from
Old Norse traust via Middle English
Ultimate origin
Old Norse (traust)

Pronunciation

  • IPA: /trʌst/[1]

Etymology

The noun is inherited from Middle English truste, probably borrowed from Old Norse traust (“help, confidence, protection”),[2][3][4] from Proto-Germanic *traustą,[2] related to Old Norse traustr (“strong”).[5] The verb is from Old Norse treysta (“to trust, rely on, make strong”).[2][6][5] Its cognates include Dutch troost (“comfort”), German Trost (“comfort, consolation”) and Gothic trausti “agreement”.[2][7][8] Etymonline relates it to Old English trēowe (“faithful”), the source of true, from Proto-Indo-European *deru- (“to be firm, solid, steadfast”).[2][4] Hoad calls its early history obscure.[9]

Earliest recorded meaning

Confidence, reliance: probably before 1200, in the Ancrene Riwle,[3] or about 1200,[2] when it also meant religious faith.[2] The verb “to have faith or confidence” is also from about 1200.[2][10]

Semantic evolution

“Confident expectation, hope” is from about 1200,[10] and “reliability, fidelity” from about 1300.[2] The verb “to believe, give credit to” is by the mid-14th century, and “to rely or depend on” from the late 14th.[2] The legal sense, confidence placed in one who holds property for its owner, is from the early 15th century,[2] and property held in this way from the mid-15th.[2] Credit given to a buyer is trust from 1573.[10] A group of businesses under one control is a legal sense attested by 1877; it became a major American political issue, hence trust-buster by 1903.[2]

Timeline

  • c. 1200 – confidence; to have confidence (Ancrene Riwle).[3][2]
  • c. 1300 – trustworthiness.[2]
  • early 15th century – in law.[2]
  • 1573 – commercial credit.[10]
  • 1877 – a business trust.[2]
  • 1903 – trust-buster.[2]

Modern meaning

Noun

  1. Firm reliance on the integrity, ability or character of a person or thing.
  2. Custody, care; something committed to another's care.
  3. The obligation of one in whom confidence is placed.
  4. (law) A legal arrangement by which property is held by one party for the benefit of another; the property so held.
  5. A combination of firms that reduces competition.
  6. Commercial credit.

Verb

  1. To have or place confidence in; to depend on.
  2. To expect with assurance; to hope.
  3. To place in another's care; to entrust.
  4. To extend credit to.

Word family

  • truster
  • trustability
  • trustable
  • trustingly
  • trustingness
  • antitrust
  • entrust
  • intrust

Usage notes

The American Heritage Dictionary distinguishes trust, which implies deep feeling often based on inconclusive evidence, from faith, confidence, reliance and dependence.[11]

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 m n o p q r Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  4. ^ a b The American Heritage Dictionary of the English Language (2000), 4th ed., Boston: Houghton Mifflin
  5. ^ a b Soanes, Catherine; Stevenson, Angus, eds. (2004), Concise Oxford English Dictionary, 11th ed., Oxford: Oxford University Press
  6. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  7. ^ Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  8. ^ Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  9. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  10. ^ a b c d Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  11. ^ The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin

Related etymologies

  • haggle · also from Old Norse
  • awkward · also from Old Norse
  • same · also from Old Norse
  • big · also from Old Norse
  • until · also from Old Norse
  • both · also from Old Norse
  • band · also from Old Norse
  • geyser · also from Old Norse
Cite this entry

“Trust.” Etymologically, 15 Oct. 2026, etymologically.com/en/trust. Accessed 15 Oct. 2026.

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