softly softly
discreet
fast
ultradiscreet
keep one's mouth shut
discreetly
shy
close to the vest
discreetness
hidelings
private
stealthfulness
sensitive
keep quiet
hugger-mugger
keep a low profile
shut one's mouth
stealthy
on the Q.T.
leave nothing to the imagination
cagey
covert
intimate
under one's hat
walk on eggshells
furtiveness
canny
chary
sneakiness
mousy
stealthiness
sneak
soap
politic
discretion
shadow
sub rosa
semisecretly
semisecrecy
listen in
stealthen
keep one's lips sealed
wary
sneaking
pent
skulk
secretive
hide-all
warily
covertly
closehandedness
restrained
hidingly
guarded
reclusive
indiscreet
fastly
slip in
close as wax
mantle
concealable
frood
stealthily
under the table
securely
watch one's step
crypto
slip one past
surreptitiously
semisecret
snug
confidentially
firmly
tick a lock
hypervigilantly
play it close to the hip
a man's home is his castle
secretively
surreptitious
veil
cloakedly
feign
confidentiality
pussyfoot
darkness
hushable
hideling
seclusively
covertness
creep
mouse