blurt, bond, break, cache, close, dark, deep, flit, fuchs, game, give, hard, head, hoard, klan, past, peek, peep, pledge, plot, safe, sphinx, spy, stash, trust, tryst, word

arcane, backstair, backstairs, back door, black hand, bosom, boxer, bring out, burn bag, cabal, cipher, collude, conclave, covert, cryptic, cypher, design, disclose, disclosed, divulge, entrust, expose, faction, fleming, furtive, hiding, hustle, impart, james bond, junto, klaus fuchs, let on, let out, mason, open, orgy, overt, parole, password, private, reveal, secrete, silence, spying, suspend, watchword, yenta

assassin, beria, bridge agent, cabala, cabbala, cabbalah, camorra, collusion, collusive, concealing, concealment, confidence, connivance, conniving, conspire, countersign, cryptical, cryptograph, decryption, dirty war, discover, divulgement, divulgence, eavesdropper, exposure, fanciful, freemason, gestapo, give away, hushed-up, hush money, in secret, kabala, kabbala, kabbalah, kkk, ku klux klan, maffia, mafia, nightrider, night rider, police state, privily, qabala, qabalah, resistance, sayeret, secrecy, secret code, secret plan, sibylline, skeleton, sub rosa, trade secret, underground, windtalker, wire-puller

assignation, cabalistic, camarilla, codetalker, confidential, conspiracy, conventicle, ian fleming, illusory, incompetent, intelligence, kabbalistic, open secret, provocateur, qabalistic, secretary, secretiveness, secret ballot

agent provocateur, confederacy, manhattan project, repository, sayeret matkal, undercover work, underground railroad, underground railway

emil klaus julius fuchs, inquisitorial, undercover agent

confidentiality, ian lancaster fleming, rashtriya swayamsevak sangh, sicilian mafia, skeleton in the closet, skeleton in the cupboard

intelligence information, undercover operation