Synonyms|252Antonyms|11|Broader|7Narrower|21Related|91
22
trespasser(noun, attacker, impostor, invader, interloper)
16
invader(noun, attacker, settler, foreigner, stranger)
12
interloper(noun, unknown, alien, visitor, settler)
10
meddler(noun, trespasser)
8
outsider(noun, alien, visitor, settler, foreigner)
6
thief
5
aggressor(noun, attacker, invader, trespasser)
5
snoop
4
alien(noun, adjective, being, attacker, visitor)
4
interferer
4
newcomer(noun, alien, visitor, settler, foreigner)
4
assailant(noun, attacker, invader)
4
buttinsky
4
squatter(noun, alien, impostor, visitor, settler)
4
stranger(noun, alien, visitor, settler, foreigner)
3
busybody(noun, nosy)
3
emigrant(adjective, extraneousness)
3
encroacher
3
gatecrasher
3
crasher
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APASmart Define. (2016). intruder thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/intruder/thesaurus/synonyms
ChicagoSmart Define. 2016. "intruder thesaurus" https://smartdefine.org/intruder/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, intruder thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/intruder/thesaurus/synonyms>.
MLASmart Define. "intruder thesaurus" 26 February 2016. Web. 20 September 2026. <https://smartdefine.org/intruder/thesaurus/synonyms>