¦ noun
1. firm belief in someone or something.
acceptance of the truth of a statement without evidence or investigation.
2. the state of being responsible for someone or something: a man in a position of trust.
3. Law an arrangement whereby a person (a trustee) holds property as its nominal owner for the good of one or more beneficiaries.
a body of trustees.
an organization managed by trustees.
4. chiefly N. Amer. a large company that has or attempts to gain monopolistic control of a market.
5. W. Indian or archaic commercial credit.
6. archaic a hope or expectation.
¦ verb
1. believe in the reliability, truth, or ability of.
(trust someone with) have the confidence to allow someone to have, use, or look after.
(trust someone/thing to) commit someone or something to the safe keeping of.
(trust to) place reliance on (luck, fate, etc.).
2. hope or expect (used as a polite formula): I trust that you have enjoyed this book.
3. archaic allow credit to.
Phrases
trust someone to -- it is characteristic or predictable for someone to act in the specified way.
Derivatives
trustable adjective
trusted adjective
truster noun
Origin
ME: from ON traust, from traustr 'strong'; the verb from ON treysta.