资料来源 : pyDict

无怀疑的,无疑虑的,信任的

资料来源 : WordNet®

unsuspecting
     adj 1: not suspicious; "deceiving the unsuspecting public" [syn: {unsuspicious}]
     2: (often followed by `of') not knowing or expecting; not
        thinking likely; "an unsuspecting victim"; "unsuspecting
        (or unaware) of the fact that I would one day be their
        leader"