Synonyms: backstair, backstairs, furtive
Definition: secret and sly or sordid
Usage: backstairs gossip; his low backstairs cunning- A.L.Guerard; backstairs intimacies; furtive behavior
Similar words: covert
Definition: secret or hidden; not openly practiced or engaged in or shown or avowed
Usage: covert actions by the CIA; covert funding for the rebels
Synonyms: stealthy, surreptitious, sneak, sneaky, furtive
Definition: marked by quiet and caution and secrecy; taking pains to avoid being observed
Usage: a furtive manner; a sneak attack; stealthy footsteps; a surreptitious glance at his watch
Similar words: concealed
Definition: hidden on any grounds for any motive
Usage: a concealed weapon; a concealed compartment in his briefcase