RichThesaurus
off-the-books
off-the-books
synonyms
under wraps
slinky
cloak-and-dagger
dern
secret
sly
sub rosa
incognito
secretive
under the radar
behind the scenes
abstruse
inconspicuous
on the sly
undercover
low profile
underground
confidential
huggermugger
lurksome
furtive
disguised
stealthy
obfuscated
clandestine
catlike
under-the-table
on the down-low
covert
sneaky
off the books
surreptitious
hush-hush
concealed
lurky
off-the-books
antonyms