Standard Lemma guide

interloper

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˌɪntəˈləʊ̯pə/
  • Canada, General-American: /ˌɪntɚˈloʊ̯pɚ/
  • Texas: Recorded audio is listed in the source snapshot.
  • Australian: /ˌɪntəˈlæɔ̯pə/
  • CMU ARPABET: IH1 N T ER0 L OW2 P ER0 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

One who interferes, intrudes or gets involved where not welcome, particularly a self-interested intruder.

Definition source: English Wiktionary via Wiktextract

Examples

  • They disliked the interloper, and forced him to leave.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

An unlicensed or illegitimate trader.

Definition source: English Wiktionary via Wiktextract

Usage: obsolete

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

someone who intrudes on the privacy or property of another without permission

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: intruder, trespasser

Antonyms: none provided

Broader terms: unwelcome person, persona non grata, entrant

Narrower terms: boarder, gatecrasher, crasher, unwelcome guest, infiltrator, invader, encroacher, penetrator, prowler, sneak, stalker, pusher, thruster, squatter, stranger, alien, unknown

History

Etymology

From inter- + loper (“runner, rover”), as in landloper (“vagrant”) (from lope (“to leap, to jump”) (originally dialectal)). 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.

Across languages

Translations

21 source translations are retained for this English entry.

  • Dutch: indringer — one who interferes
  • Finnish: tungettelija — one who interferes
  • Finnish: tunkeilija — one who interferes
  • French: intrus — one who interferes
  • German: Eindringling — one who interferes
  • Hungarian: betolakodó — one who interferes
  • Icelandic: boðflenna — one who interferes
  • Icelandic: aðskotadýr — one who interferes
  • Italian: intruso — one who interferes
  • Japanese: 闖入者 (chinnyūsha) — one who interferes
  • Macedonian: натрапник (natrapnik) — one who interferes
  • Māori: kaiauwaha — one who interferes
  • Māori: kaihūrau — one who interferes
  • Norwegian Bokmål: inntrenger — one who interferes
  • Polish: natręt — one who interferes
  • Serbo-Croatian: uljez — one who interferes
  • Spanish: intruso — one who interferes
  • Spanish: entremetido — one who interferes
  • Spanish: entrometido — one who interferes
  • Spanish: detentador — one who interferes
  • Swedish: inkräktare — one who interferes