An unwanted house guest who invites himself to stay in your home is an example of an interloper.
- an unauthorized trading vessel in areas assigned to monopolies or chartered companies
- any unauthorized trader
- a person who meddles in others' affairs
Origin of interloperinter- + -loper from landloper, a vagrant from Dutch from land, land + loper, a runner from lopen, to run: see leap
- One that interferes with the affairs of others, often for selfish reasons; a meddler.
- One that intrudes in a place, situation, or activity: “When these interlopers choke out native species, ecologists see a danger signal” ( William K. Stevens )
- Archaic a. One that trespasses on a trade monopoly, as by conducting unauthorized trade in an area designated to a chartered company.b. A ship or other vessel used in such trade.
Origin of interloperinter- probably Middle Dutch lōper runner ( from lōpen to run )
1590s, from inter- + loper (“runner, rover”), as in landloper (“vagrant”) (from Dutch) or lope (“to leap, to jump”) (originally dialectical). Originally spelt enterloper and used in specific sense “unauthorized trader trespassing on privileges of chartered companies”, later general sense of “self-interested intruder” from 1630s.