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1. One that interferes with the affairs of others, often for selfish reasons; a meddler.
2. One that intrudes in a place, situation, or activity: "When these interlopers choke out native species, ecologists see a danger signal" (William K. Stevens).
3. 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.

[inter- + probably Middle Dutch lōper, runner (from lōpen, to run).]

in′ter·lope′ v.
Word History: The word interloper has its origin in the time when England was embarking on the course that would lead to the British Empire. Interloper is first recorded in the late 1500s in connection with the Muscovy Company, the earliest major English trading company (chartered in 1555). The word was soon being used in connection with independent traders competing with the East India Company (chartered in 1600). These companies were established as monopolies, and independent traders, called interlopers, were not welcome. The term is probably partly derived from Dutch, the language of one of the great trade rivals of the English at that time. The inter- is simply the prefix inter-, which English has borrowed from Latin, meaning "between, among." The element -loper is probably related to the same element in landloper, "vagabond," a word adopted from Dutch landloper, with the same sense and composed of land, "land," and loper, from lopen, "to run, leap." The word interloper soon came to be used in the extended sense "meddler, person who intrudes in others' affairs" by the 1630s.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌɪntəˈləʊp; ˈɪntəˌləʊp)
vb (intr)
to intrude or interfere in the affairs of others
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌɪn tərˈloʊp, ˈɪn tərˌloʊp)

v.i. -loped, -lop•ing.
1. to thrust oneself into the domain or affairs of others.
2. to intrude into some region or field of trade without a proper license.
in′ter•lop`er, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Verb1.interlope - encroach on the rights of others, as in trading without a proper license
intervene, step in, interfere, interpose - get involved, so as to alter or hinder an action, or through force or threat of force; "Why did the U.S. not intervene earlier in WW II?"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


To intervene officiously or indiscreetly in the affairs of others:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
L'Algerie fait face, depuis de longues annees, a une offensive ininterrompue d'organisations interlopes et de puissances etrangeres qui font de l'Islam leur cheval de Troie pour corrompre son tissu social et supplanter sa doctrine religieuse dans l'objectif de faire de notre pays, et aux depens de ses interets nationaux, un simple appendice de leurs politiques.
The 3D model revealed three different types of structures (Alpha helicles, Beta plated sheets and Interlopes) (Fig.
Situe a une periode charniere dans l'oeuvre d'Eekhoud, ce roman marque la phase initiale d'un developpement qui menera l'ecrivain hors du socialisme vers un anarchisme ouvertement revendique, apre melange d'une haine du bourgeois et d'une defiance a l'egard des masses serviles, et en meme temps attirance profonde pour les milieux interlopes. (1) Cette attirance est en partie fondee sur le culte de l'exception monarchique et l'exaltation d'un nationalisme atypique.