fiduciary

nouns

a person who holds assets in trust for a beneficiary
"it is illegal for a fiduciary to misappropriate money for personal gain"
fiduciary
is a type of (narrower)
a human being
"there was too much for one person to do"
individual, mortal, person, somebody, someone, soul

adjectives

relating to or of the nature of a legal trust (i.e. the holding of something in trust for another)
"a fiduciary contract"; "in a fiduciary capacity"; "fiducial power"
fiducial, fiduciary
pertains to
trust