1. One who runs into business to which he has no right; an intruder.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• intelopers,
• unterloper,
• jnterloper,
• knterloper,
• onterloper,
• 9nterloper,
• 8nterloper,
• ibterloper,
• imterloper,
• ijterloper,
• ihterloper,
• interlooer,
• intereloper,
• interlooper,
• interlopper,
• interloperr,
• intreloper,
• interguler,
• interoptek,
• Interlupure

• internist,
• interred,
• intercalary,
• interceptor,
• interoperable,
• interlocutor,
• interject,
• in utero,
• interlude,
• interdict,
• interspersal,
• interface,
• interviewer,
• interrupt,
• interlineal,
• interior,
• in trouble,
• internal ear,
• interbred,
• antelope,
• interspersion,
• interiorise,
• interpose,
• interview,
• interact,
• interrupted,
• interlard,
• in the raw,
• interlocutory,
• interval,
• interlope,
• interfere,
• interment,
• interest,
• Internode,
• interlinear,
• intermit,
• interpellate,
• intercom,
• internalize,
• in theory,
• internee,
• interpersonal,
• interpret,
• internal,
• interleave,
• interlock,
• interpreting,
• intermix,
• intersperse,
• interpreter,
• internally,
• interpreted,
• interiorize,
• Interpol,
• intermural,
• interphone,
• intersex,
• interrelate,
• interference,
• interne,
• interpretive,
• interlaced,
• interim,
• Interleaf,
• interlink,
• interlayer,
• interlobular,
• intermarry,
• intercept,
• internet,
• intercede,
• intersect,
• interferon,
• internalise,
• intercalate,
• interplay,
• interlace,
• interrupter,
• interlocking,
• inter alia,
• Interlaken,
• interpretable,
• interpolate,
• intervene.

The adjective form of the word "interloper" is "interloping".

The plural of the "interloper" can be the "interlopers".

The singular of the "interloper" can be the "interloper".