Interloper definition

Interloper

Topics Interloper Definition

WordNet

(1) Someone who intrudes on the privacy or property of another without permission

WiktionaryText

An unlicensed or illegitimate trader.
One who interferes, intrudes or gets involved where not welcome.

They disliked the interloper, and forced him to leave.

Microsoft thought Linux as a new interloper, who was stealing away the Desktop market.