Synonyms|69Antonyms|1|Broader|8Narrower|0Related|34
7
spy(noun, plant, mole, detective, intruder)
6
secret agent(noun, expression, idiom, plant, spy)
4
mole(noun, plant, spy, detective, intruder)
3
intruder
2
interloper
2
double agent(noun, expression, idiom, plant, spy)
2
informer(noun, plant, spy, mole, detective)
2
invader
2
penetrator
2
percolator
2
squealer
1
buttinsky
1
detective(noun, plant, spy, mole)
1
encroacher
1
enterer
1
operative(noun, plant, spy, mole, detective)
1
pervader
1
piercer
1
saturator
1
scout(noun, plant, spy, mole, detective)
For more, visit Infiltrator on Power Thesaurus
11 years ago|3.2k views|share |citing 
APASmart Define. (2015). infiltrator thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/infiltrator/thesaurus/synonyms
ChicagoSmart Define. 2015. "infiltrator thesaurus" https://smartdefine.org/infiltrator/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, infiltrator thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/infiltrator/thesaurus/synonyms>.
MLASmart Define. "infiltrator thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/infiltrator/thesaurus/synonyms>