oversecrete
hypersecrete
hypersecretion
hypersecretory
oversecretion
secernent
secretively
closehanded
secret
hiding
concealment
concealing
semisecret
keep from
ectocrine
hypersecrecy
let the cat out of the bag
closehandedness
hidness
darkness
backroom
disembosom
in secret
on the QT
cloakedly
on the Q.T.
secretly
secretive
keep a lid on
silence
secretiveness
secrecy
secretolytically
semisecretly
sub rosa
covert
keep
on the hush
under wraps
supersecret
on the down-low
under the table
privily
under the covers
hush up
hideling
ooze
under one's hat
mum
make known
ultrasecret
out
semisecrecy
confidentiality
prosecretory
latently
closeness
clandestinely
concealedly
hugger-mugger
cryptadia
underhanded
sensitive
secretoinhibitory
something nasty in the woodshed
clandescent
secretomal
furtive
spill the beans
conceal
supersecrecy
underhand
keep quiet
divulgence
divulgement
between you and me
lean
subterranean
clammish
leak
surreptitiously
stall
secrete
off-the-record
undisclosedly
secern
secretomics
secretability
crypto-