RichThesaurus
infiltrator
infiltrator
synonyms
plant
spy
mole
secret agent
agent
spook
intelligencer
interloper
informer
double agent
intruder
operative
undercover agent
informant
invader
trespasser
gatecrasher
thief
burglar
raider
encroacher
prowler
tout
stoolie
peacher
traitor
turncoat
interferer
stranger
obtruder
nark
narc
snooper
meddler
nuisance
shelf
squatter
tale teller
snout
snitch
snake in the grass
supergrass
pimp
tattletale
unwanted person
outsider
provocateur
robber
nose
unwanted visitor
more synonyms
infiltrator
antonyms