interloper Meaning, Definition & Usage

  1. noun someone who intrudes on the privacy or property of another without permission
    trespasser; intruder.

WordNet

In"ter*lo`per noun
Etymology
Pref. inter- + D. looper a runner, fr. loopen to run; akin to E. leap. See Leap, and cf. Elope.
Definitions
  1. One who interlopes; one who interlopes; one who unlawfully intrudes upon a property, a station, or an office; one who interferes wrongfully or officiously.
    The untrained man, . . . the interloper as to the professions. I. Taylor.

Webster 1913