noun
ADJECTIVE
▪ enemy , foreign , government , industrial
▪ suspected
▪ top
▪
Britain's top ~
▪ British , Soviet , etc.
… OF SPIES
▪ network
VERB + SPY
▪ act as , be , work as
▪
He denied acting as an enemy ~.
▪ recruit (sb as)
SPY + VERB
▪ infiltrate
▪
Soviet spies who had infiltrated the American government
SPY + NOUN
▪ film ( esp. BrE ), movie ( esp. AmE ), novel , story , thriller
▪ camera , plane , satellite
▪ network , ring
▪
Counter-intelligence officers uncovered a ~ ring involving twenty agents.
▪ agency ( esp. AmE )
▪
the director of a top American ~ agency
▪ chief
PREPOSITION
▪ ~ for
▪
He was a ~ for the government.