infiltrator
(noun)
noun
1. someone who takes up a position surreptitiously for the purpose of espionage
Definition categories: person, spy
2. an intruder (as troops) with hostile intent
Definition categories: person, interloper, intruder, trespasser
(noun)
1. someone who takes up a position surreptitiously for the purpose of espionage
Definition categories: person, spy
2. an intruder (as troops) with hostile intent
Definition categories: person, interloper, intruder, trespasser