Synonyms|131Antonyms|27|Broader|7Narrower|17Related|62
24
intruder(noun, unknown, alien, visitor, settler)
14
trespasser(noun, criminal, thief, attacker, impostor)
10
alien(noun, adjective, being, attacker, visitor)
10
foreigner(noun, alien, visitor, settler, stranger)
8
meddler(noun, participate)
7
immigrant(alien, visitor, settler, foreigner, stranger)
7
invader(noun, attacker, settler, foreigner, stranger)
7
newcomer(noun, alien, visitor, settler, foreigner)
7
outsider(noun, alien, visitor, settler, foreigner)
6
infiltrator
5
crasher
4
squatter(noun, criminal, thief, alien, visitor)
4
stranger(noun, alien, visitor, settler, foreigner)
4
boarder
4
buttinsky(noun, slang, participate)
4
encroacher
2
party crasher(expression, idiom, hindrance, alien, visitor)
2
pusher
2
stalker
2
unknown(alien, visitor, foreigner)
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APASmart Define. (2015). interloper thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/interloper/thesaurus/synonyms
ChicagoSmart Define. 2015. "interloper thesaurus" https://smartdefine.org/interloper/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, interloper thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/interloper/thesaurus/synonyms>.
MLASmart Define. "interloper thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/interloper/thesaurus/synonyms>