If you are distrustful of someone or something, you think that they are not honest, reliable, or safe. Voters are deeply distrustful of all politicians
incredulous by virtue of distrust having or showing distrust; "a man of distrustful nature"; "my experience
having or showing distrust; "a man of distrustful nature"; "my experience in other fields of law has made me distrustful of rules of thumb generally"- B N Cardozo; "vigilant and distrustful superintendence"- Thomas Jefferson
Not confident; diffident; wanting confidence or thrust; modest; as, distrustful of ourselves, of one's powers