stealthy Synonyms

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