sub-rosa (adjective) furtive: sneaky, secretive
Sinonime: artful, calculating,
cautious,
circumspect,
clandestine, cloaked, conspiratorial,
covert,
crafty*,
creepy*,
cunning, disguised,
elusive,
evasive,
foxy, guileful,
hidden, hush-hush,
insidious, masked, scheming, shifty, skulking, slinking,
sly,
stealthy, sub-rosa,
surreptitious,
tricky*, under wraps, under-the-table, undercover, underhand, underhanded,
wilyAntonime: aboveboard,
forthright,
honest,
open,
truthful