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What is another word for not in the public domain?

Need synonyms for not in the public domain? Here's a list of similar words from our thesaurus that you can use instead.

Adjective
Intended to be kept secret
private
secret
confidential
clandestine
covert
unofficial
closet
protected
classified
closed
inside
secretive
stealthy
discreet
hidden
privileged
sneaky
stealth
surreptitious
undercover
underground
backstage
backstairs
dissembled
esoteric
furtive
hushed
incognito
intimate
nonpublic
privy
restricted
undisclosed
unknown
backdoor
concealed
inconspicuous
offstage
sneak
underhanded
censored
dark
sneaking
underhand
unpublished
unrevealed
unseen
untold
veiled
non-public
top-secret
in camera
strictly confidential
under wraps
behind the scenes
behind-the-scenes
hole-and-corner
close to one's chest
hush-hush
not for publication
off the record
under one's hat
behind someone's back
hugger-mugger
not for circulation
not open
not to be disclosed
not to be made public
cloak-and-dagger
one-on-one
tête-à-tête
sly
black
shrouded
on the QT
obscured
under-the-table
sub-rosa
conspiratorial
quiet
mumUK
momUS
more ❯
“Research involving humans may also include the collection of information from or about humans, such as through surveys, and from records of nonliving humans that are not in the public domain.”
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not in the slightest
not in the swim
not intoxicated
not in use
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not in the mood
not in the loop
not in the least likely
not in the least
not in the cards
not international
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