stealthy Synonyms

surreptitious concealed furtive sneaky sneak sneaking undercover slinky subtle stealthful stealth shifty silent skulking slinking sly under cover thievish sneakingly hush-hush hole-and-corner conspiratorial cloak-and-dagger cagey burglarise under-the-table wily underhanded underhand underground tricky secretive secret covert confidential closet cloaked clandestine cautelous catty catlike backstair backstairs backdoor astute artful crafty cunning privy private