Etymograph

English

fiduciary

Fiduciary comes from Latin fīdūciārius ‘held in trust’, and goes back to Proto-Indo-European *bʰeydʰ-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*bʰeydʰ-‘to trust’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*bʰéydʰeti‘to trust’reconstructed
  3. Proto-Italicc. 1500–700 BCE*feiðō‘to trust’reconstructed
  4. Latinc. 75 BCE–200 CEfīdō‘to trust’
  5. Latin, derivedc. 75 BCE–200 CEfīdūcia‘trust’
  6. Latin, derivedc. 75 BCE–200 CEfīdūciārius‘held in trust’
  7. Englishearliest quotation 2002fiduciary

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*bʰeydʰ-‘to trust’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*bʰéydʰeti‘to trust’reconstructed
  3. Proto-Italicc. 1500–700 BCE*feiðō‘to trust’reconstructed
  4. Latinc. 75 BCE–200 CEfīdō‘to trust’
  5. Latin, derivedc. 75 BCE–200 CEfīdūcia‘trust’
  6. Latin, derivedc. 75 BCE–200 CEfīdūciārius‘held in trust’
  7. Englishearliest quotation 2002fiduciary

Earliest quotation: 2002, Colin Jones, The Great Nation: “Indeed, currency would be more effective for not being…”

Linked words

through Proto-Indo-European *bʰeydʰ- ‘to trust’

federal, federation, confederate, defy, fidelity, defiance, bode, foi, fealty, infidel, confidante, perfidy, 25 more

through Proto-Indo-European *bʰéydʰeti ‘to trust’

abide, bide, 6 more

through Latin fīdō ‘to trust’

confidence, confident, affidavit, confidant, confide, diffident, 3 more

Today it means

adj Relating to an entity that owes to another good faith, accountability and trust, often in the context of trusts and trustees.

Language periods are conventional ranges, not dates for this word.

Etymograph / Proto-Indo-European *bʰeydʰ- / fiduciary

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