When you snoop, you poke around in someone else's business. A teenager might snoop in her sister's room, looking for her diary.

You snoop when you rustle through someone's garbage looking for love letters, and if you spy on your neighbor through the curtains, you also snoop. In fact, if you spend enough time doing this, you'll be called a snoop — a sneaky busybody. The earliest meaning of snoop, "to go around in a prying manner," comes from the Dutch word snoepen, "to pry."

Definitions of snoop
  1. verb
    watch, observe, or inquire secretly
    synonyms: sleuth, spy, stag
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    type of:
    monitor, supervise
    keep tabs on; keep an eye on; keep under surveillance
  2. noun
    a spy who makes uninvited inquiries into the private affairs of others
    synonyms: snooper
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    a secret listener to private conversations
    phone tapper, tapper, wiretapper
    someone who wiretaps a telephone or telegraph wire
    type of:
    a secret watcher; someone who secretly watches other people
Word Family

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