honestThe new MP was refreshingly honest with her constituents.
straightJust be straight with her and tell her how you feel.
sincereHe's so sincere that you know exactly where you stand with him.
truthfulAre you being truthful with me?
trustworthyIn a small town, if someone isn't trustworthy, everyone knows it.
candidWe had a very candid discussion.
frankTo be frank, I didn't know what I was doing.
openHe's quite open about his weaknesses.
transparentThe management promised to be totally transparent about where the funds were spent.
guilelessAs a child she was exuberant and guileless.