an informant who exposes wrongdoing within an organization in the hope of stopping it; "the law gives little protection to whistleblowers who feel the public has a right to know what is going on"; "the whistleblower was fired for exposing the conditions in mental hospitals"
appropriate (as property entrusted to one's care) fraudulently to one's own use; "The accountant embezzled thousands of dollars while working for the wealthy family"