Related by context. Frequent words. (Click for all words.) 72 covert 59 secret 59 illicit 54 covertly 51 CIA 51 secretly 51 secretive 49 spies 49 undercover 48 spy 48 shadowy 48 illegal 47 nefarious 46 informants 45 subversive 45 surreptitiously 44 underground 43 spying 43 Mossad 43 infiltrate 42 Intelligence Agency 42 espionage 42 shady 41 smuggling 41 operatives 41 unauthorized 41 conceal 41 rogue 41 MI6 41 drug trafficking 40 underworld 40 concealed 40 infiltrating 40 terrorist 40 drug traffickers 40 sinister 39 subterranean 39 guerilla 39 smuggled 39 hiding 39 intelligence 39 hidden 38 smugglers 38 mafia 38 paramilitary 38 undeclared 38 concealment 38 Secret 38 guerrilla 37 infiltrated 37 illegality 37 contraband 37 sympathizers 37 KGB 37 launder 37 Illegal 37 discreet 37 Al Qaeda 37 smuggler 36 biological weapons 36 Undercover 36 narcotics 36 suspicions 36 mole 36 interrogation 36 informant 36 unethical 36 extremist groups 36 CSIS 36 smuggle 36 militant 35 nuclear weapons 35 couriers 35 al Qaeda 35 murderous 35 eavesdropping 35 jihadi 35 mercenary 35 ruse 35 spied 35 complicity 35 renegade 34 hideouts 34 undercover agent 34 secrets 34 scandalous 34 trafficking 34 hide 34 concealing 34 prostitutes 34 terrorists 34 uncovered 34 traffickers 34 sabotage 34 revelations 34 laundered 34 secrecy 34 unsavory 34 devious 34 middlemen 34 commando