infiltrator

Noun

Meaning

an intruder (as troops) with hostile intent

someone who takes up a position surreptitiously for the purpose of espionage

Source: WordNet

Synonyms

percolator plant prowler spy insider operative informant intruder aggressor invader narc provocateur encroacher interferer buttinsky

Antonyms

sealer

Hypernyms

spy intruder trespasser interloper undercover agent

Examples

Singer James Murphy was marked by certain Banshees albums during his childhood. citation His band LCD Soundsystem covered " Slowdive " as a B-side to the single " Disco Infiltrator ". Source: Internet

Close letter words and terms

infiltrationism infiltrative infiltratively infiltratrix infiltrometer infiltrometry