If you're unsuspecting, you are innocent and trusting. An unsuspecting tourist will be blissfully unaware that the smiling old lady on the subway has stolen his wallet.

If you lack a sense of suspicion or distrust, especially in the face of some kind of danger, you're unsuspecting. A criminal's unsuspecting victims find themselves utterly surprised that they've been robbed, and an unsuspecting hiker wanders right into a bear's den. In both cases, a little bit of suspicion would have served them well.

Definitions of unsuspecting
  1. adjective
    (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”
    incognizant, unaware
    (often followed by `of') not aware
  2. adjective
    not suspicious
    “deceiving the unsuspecting public”
    synonyms: unsuspicious
    trustful, trusting
    inclined to believe or confide readily; full of trust
Word Family