noun, plural fi·du·ci·ar·ies.
Origin of fiduciary
British Dictionary definitions for fiduciarily
noun plural -aries
- having the nature of a trust
- of or relating to a trust or trustee
Word Origin for fiduciary
Word Origin and History for fiduciarily
1630s, from Latin fiduciarius "(holding) in trust," from fiducia "trust" from root of fidere "to trust" (see faith). In Roman law, fiducia was "a right transferred in trust;" paper currency sense (1878) is because its value depends on the trust of the public. As a noun, from 1630s.