Simple past tense and past participle of trust.(verb)
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Use "trusted" in a sentence
"+ ... a company like Yahoo may be able to create more consumer-friendly search by working towards an embrace of open formats and interoperability and participation in a trusted metadata scheme, but will bias the voice so that a certain trusted universe of publishers may be featured, as it were."
"But he said I must, and he trusted me, he _trusted_ me to tell the truth and the whole truth, and I can't deceive him; I can't hide anything after that. ""
"The right to arrive at a mutually agreed upon definition of the term trusted partner"