Synonym : secret covert stealthy furtive clandestine surreptitious underhanded

 Synonym discussion: secret covert stealthy furtive clandestine surreptitious underhanded mean done without attracting observation, secret implies concealment on any grounds for any motive 


James Bond works in secret service. He tried to enter into M's office stealthily ( secretly without been seen or heard). But M was alert. Now Bond has to be furtive i.e.  stealthily plus sly or cunning. He finally entered her office. After search through M's computer , he found out that enemies are meeting at bar of Miami , a clandestine( evil secrecy ) place. But our James Bond exposed their underhandedness (secret fraud).