covert, secret, illicit, furtive, secretive, undercover, surreptitious, shadowy, illegal, nefarious, subversive, supersecret, sub rosa, underground, intelligence agency, deniable, shady, terrorist, sinister, drug trafficking, concealed, subterranean, unauthorized, compartmented, tacit consent, cali cartel, counterterrorist center, smuggled, irangate, hidden, conspiratorial, grouplet, mossad, gunrunning, undeclared, paramilitary, contraband, medellin cartel, disserving, discreet, semipublic, stealthy, counterterrorist, militant, proscribed, narcotics, lebanese hizballah, unethical, extralegal, treasonous, disreputable, soviet kgb, seditious, agents provocateurs, huji, jihadi, backstreet, anticommunist, murderous, unacknowledged, biological warfare, scandalous, laundered, mercenary, unsavory, undercover agent, misogynous, witting, narco, extramarital, devious, diabolical, uncovered, duplicitous, black marketeering, machinated, germ warfare, freebooting, untraceable, seedy, lawless, criminal, military, cabalistic, modi operandi, undetected, vietminh, sly grog, kim philby, cultic, sordid, squalid, fraudulent, paranoic, dirty, sicilian mafia, unhidden, hugger mugger, cryptologic, backroom, sapphic, sting operation, discrete, pro, alms, animate, autonomous, com, con, feudal, foreign, hold, intrinsic, literary, mercantile, natural, personal, petty, random, tender, \u00ab, unsanctioned, interdenominational, informal, regularized, haphazard, intercolonial, interracial, intertribal, organized, routinized, unofficial, diplomatic, interfaith, nonviolent, wellorganized

action officer, cira, continuity army council, continuity irish republican army, dead drop, death squad, exfiltration operation, fifth columnist, haganah, intrigue, islamic community, islamic group, jemaah islamiyah, ji, malaysian mujahidin group, malaysia militant group, nipr, operational cell, revolutionary proletarian initiative nuclei, revolutionary proletarian nucleus, saboteur, samizdat, sas, special air service, spymaster, underground press

cloak-and-dagger, covert, hole-and-corner, hugger-mugger, hush-hush, on the quiet, secret, surreptitious, undercover, underground