American English

Definition of trust noun from the Oxford Advanced American Dictionary



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  1. 1[uncountable] trust (in somebody/something) the belief that someone or something is good, sincere, honest, etc. and will not try to harm or trick you Her trust in him was unfounded. a partnership based on trust It has taken years to earn their trust. If you put your trust in me, I will not let you down. She will not betray your trust (= do something that you have asked her not to do). He was appointed to a position of trust (= a job involving a lot of responsibility, because people trust him). a breach of trust If I were you, I would not place too much trust in their findings.
  2. 2[countable, uncountable] (law) an arrangement by which an organization or a group of people has legal control of money or property that has been given to someone, usually until that person reaches a particular age; an amount of money or property that is controlled in this way He set up a trust for his children. The money will be held in trust until she is 18. Our fees depend on the value of the trust.
  3. 3[countable] (law) an organization or a group of people that invests money that is given or lent to it and uses the profits to help a charity a charitable trust
  4. 4[countable] (business) a group of companies that work together illegally to reduce competition, control prices, etc. antitrust laws
  5. Idioms
    in somebody's trust, in the trust of somebody
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    being taken care of by someone The family pet was left in the trust of a neighbor.
    take something on trust
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    to believe what someone says even though you do not have any proof or evidence to show that it is true
See the Oxford Advanced Learner's Dictionary entry: trust