I think he is being 'dishonest' [='untruthful'] about what he knows.
They have been running their business 'dishonestly'.
I think she answered our questions 'dishonestly'.
(..) You trust us. The government trusts you. Anything you tell them they gotta believe, right? You've never done a dishonest thing ever, and you're pushing . We'd quit. They'd drop the charges against us, we'd fight till (..)1969 Butch Cassidy and the Sundance Kid