Naive

形容词 adj.1.幼稚的; 无经验的; 单纯的 It's naive of you to believe he'll do what he says.相信他会言行一致, 你未免太单纯了。2.天真的; 轻信的 Don't be so naive as to be taken in by their lies.不要太轻信, 以免被他们的谎言所欺骗。She is so naive that she believes everything he tells her.她如此天真以致相信他告诉她的一切。