furtive (
http://definr.com/furtive)
adj 1: marked by quiet and caution and secrecy; taking pains to
avoid being observed; "a furtive manner"; "a lurking
prowler"; "a sneak attack"; "stealthy footsteps"; "a
surreptitious glance at his watch"; "someone skulking
in the shadows" [syn:
lurking,
skulking,
sneak(a),
sneaky,
stealthy,
surreptitious]
2: secret and sly or sordid; "backstairs gossip"; "his low
backstairs cunning"- A.L.Guerard; "backstairs intimacies";
"furtive behavior" [syn:
backstair,
backstairs]