Simple past tense and past participle of administer.(verb)
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Use "administered" in a sentence
"The faction of the two party system that believes that the law can and should be competently administered is back in control. —"
"The family has requested that any donations be made to a scholarship in his name administered by the USOC at the University of Southern California film school."
"Its reason is sodium thiopental, the anesthetic administered when euthanizing living things so they will not feel pain when the two death dealing drugs are administered, is short acting and may have worn off before the remaining two drugs are administered."