1. A spy who makes uninvited inquiries into the private affairs of others
   "The nosy neighbour was a notorious snoop, always peeking through curtains";
   - snooper

1. Watch, observe, or inquire secretly
   "The detective snooped around the suspect's house for clues";
   - spy, stag, sleuth

Derived forms: snooping, snoops, snooped

Type of: monitor, spy, supervise, watchdog

Encyclopedia: Snoop, Cube, 40, Short