The term "fiduciary" refers to a person or organization that acts on behalf of another person or group, putting their clients' or beneficiaries' interests ahead of their own. This relationship is based on trust, and fiduciaries are expected to act in good faith with a high standard of care. Common examples of fiduciaries include trustees, guardians, and financial advisors.
The word "fiduciary" originates from the Latin term "fiducia," which means "trust." It has been used in the English language since the early 17th century to describe relationships that involve a duty of trust and care.