clandescent
underhand
hole-and-corner
hugger-mugger
under the table
covert
backstair
secernent
hidelings
off the grid
closehanded
secretly
under one's hat
spying
hideling
backroom
hush-hush
semisecrecy
on the Q.T.
hidingly
private
darkness
subterranean
back street
in secret
hidness
secretively
espionage
down low
on the QT
covertness
hiddenness
semisecret
closehandedness
occulted
cloakedly
confidentiality
on the down-low
on the hush
under the covers
dark
closeness
sub rosa
ultrasecret
covertly
a man's home is his castle
hypersecrecy
mum
secretive
backstage
ectocrine
privily
semisecretly
underwrapped
top secret
clandestinely
sensitive
classify
secret
under wraps
secretomal
concealedly
crypto
crypto-
off-the-record
undercraft
snooping
hypersecretory
spookspeak
industrial espionage
exposure
black-bag
steal
public domain
superarcane
spy
sanctum
back door
repository
sanctum sanctorum
secretary
hypersecretion
secret agentry
supersecret
in petto
something nasty in the woodshed
behind the scenes
concealment
clandestineness
doc drop
clandescent
underhand
hole-and-corner
hugger-mugger
covert
backstair
secernent
closehanded
hideling
backroom
private
subterranean
semisecret
occulted
dark
ultrasecret
secretive
backstage
underwrapped
sensitive
secret
under wraps
secretomal
mum
crypto
hypersecretory
black-bag
superarcane
supersecret
in petto
sub rosa
off-the-record
hugger-mugger
hidelings
off the grid
secretly
hidingly
on the Q.T.
in secret
secretively
on the QT
cloakedly
sub rosa
covertly
privily
semisecretly
clandestinely
concealedly
off-the-record
spying
hush-hush
semisecrecy
darkness
back street
hidness
espionage
down low
covertness
hiddenness
closehandedness
confidentiality
closeness
hypersecrecy
mum
ectocrine
top secret
undercraft
snooping
spookspeak
industrial espionage
exposure
public domain
sanctum
back door
repository
sanctum sanctorum
secretary
hypersecretion
secret agentry
something nasty in the woodshed
concealment
clandestineness
doc drop
classify
steal
spy
English words for 'secret, clandestine'
As you may have noticed, above you will find words for "secret, clandestine". Hover the mouse over the word you'd like to know more about to view its definition. Click 
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A very small amount
overpower
feeling of satisfaction
a stroke of luck
framed picture
seaman
parasitism
apt
To show up
distinguished person
the act of observing
crushed flat
in part
NMI
to be able to drink
to emphasise
Completely insane
to rethink
desalinating with water
last spurt
that's OK
basil
liable to
stroma
Simultaneously
A funeral director
glass jar
necklace
petulant.
PET
in agreement.
hard up
tirelessly
to illuminate.
to prowl
unharmed
to be different
coincidentally
disconnection
superficial knowledge
to throw one's weight around
looking back
to be influenced
dock
cyanobacteria
sink
skillfully
victim
outspoken
credit