- a person who interferes or meddles in the affairs of others: He was an atheist who felt like an interloper in this religious gathering.
- an intruder; trespasser.
- a person who intrudes into some region or field of trade without a proper license.
- an intruder
- a person who introduces himself into professional or social circles where he does not belong
- a person who interferes in matters that are not his concern
- a person who trades unlawfully
