shadow
shadowing
surveil
antispy
antispying
counterspying
snoopable
spy
cut-out
operative
Big Brother
spy on
survey
nark
spyproof
follow
snooping
spying
spier
off the grid
espiocrat
bespy
spooked
privily
keep shady
counterespionage
skulk
sub rosa
cover
spook
antisnoop
antisnooping
jasoos
stalkily
spylike
sensitive
co-spy
counterspy
double agent
superspook
discreetly
snoop
hidelings
undie
spycatching
hidingly
hole-and-corner
counterintelligence
espionage network
stealth
stakeout
joe
copper's nark
antibugging
vigil
bacon
plumber
undercover work
cloakedly
on the Q.T.
watch
shadower
softly softly
tail
countersurveillance
stalkee
espionage
dark
confidentiality
sneaky
under one's hat
e-stalk
secret agentry
Stasi
shut one's mouth
secret
keep one's mouth shut
hugger-mugger
antiespionage
spycraft
tick a lock
run in
keep quiet
spookspeak
spymaster
snooper
spy ring
sneak
covertly
foreign agent
abscond
monitor
antispy
antispying
snoopable
spyproof
spooked
antisnoop
antisnooping
spylike
sensitive
hole-and-corner
antibugging
softly softly
dark
hugger-mugger
antiespionage
sneak
sub rosa
off the grid
privily
sub rosa
stalkily
discreetly
hidelings
hidingly
cloakedly
covertly
shadowing
counterspying
cut-out
operative
nark
snooping
spying
spier
espiocrat
counterespionage
cover
spook
jasoos
co-spy
double agent
superspook
undie
spycatching
counterintelligence
counterspy
espionage network
stakeout
joe
copper's nark
vigil
bacon
plumber
undercover work
watch
shadow
shadower
tail
countersurveillance
stalkee
espionage
confidentiality
sneaky
secret agentry
Stasi
spycraft
snoop
spookspeak
spymaster
snooper
spy ring
foreign agent
shadow
surveil
spy
spy on
survey
follow
bespy
keep shady
skulk
counterspy
snoop
stealth
e-stalk
nark
shut one's mouth
secret
keep one's mouth shut
tick a lock
run in
keep quiet
abscond
monitor
English words for 'To secretly or discreetly track or follow another, to keep under surveillance.'
As you may have noticed, above you will find words for "To secretly or discreetly track or follow another, to keep under surveillance.". Hover the mouse over the word you'd like to know more about to view its definition. Click 
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just under
Of the same age
prayer meeting
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original meaning
just before
middle of the night
to throw off
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eighteen
abstention
crimp
DBMS
plainly.
central figure
lustrous
formally
number one
phrase
gibberish
to fly
to vanish
to come out
physical