Hillary Clinton lost credibility when she sat in the Benghazi hearings and said, "What difference does it make?" Clinton will say whatever she thinks will work in order to advance her position. If she really had pneumonia, how did she recover so quickly? She walked out of Chelsea's apartment only a few hours later. It doesn't add up.
Hillary Clinton may not be the most honest person in the world, but she is a great deal more honest than Trump. She is less honest than Bernie Sanders, and even less honest than the fictional version of Washington as depicted in the folklore about the cherry tree he supposedly chopped down.
Hillary Clinton is a life-long politician with over 30 years in public service and she has left an impression of her covering up mistakes. It is not dishonesty but a more defensive posture. It is a frequent political tactic to only show the best side and cover any negative issues, so Hillary Clinton appears to be dishonest for not sharing all her details.
Hillary Clinton is not dishonest. Those who make claims against her character are right wing politicians or media outlets. This includes a Whitewater land deal in which she and her husband lost money, meaning the charges make no sense. In the latest scandal, she has used a private e-mail, which her predecessor also did. Her public comments have matched her actions.