WordNet: clandestine, cloak-and-dagger, hole-and-corner, hugger-mugger, hush-hush, secret, surreptitious, undercover, underground
conducted with or marked by hidden aims or methods; "clandestine intelligence operations"; "cloak-and-dagger activities behind enemy lines"; "hole-and-corner intrigue"; "secret missions"; "a secret agent"; "secret sales of arms"; "surreptitious mobilization of troops"; "an undercover investigation"; "underground resistance"
- similar to covert
clandestine
- (suomi) salassa pidetty (synonyymi)
cloak-and-dagger
- (suomi) salamyhkäinen (synonyymi)
hole-and-corner
- (suomi) salamyhkäinen (synonyymi)
hugger-mugger
- (suomi) salamyhkäinen (synonyymi)
hush-hush
- (suomi) salainen (synonyymi)
secret
- (suomi) salainen (synonyymi)
surreptitious
- (suomi) salainen (synonyymi)
undercover
- (suomi) salainen (synonyymi)
underground
- (englanti) underground (derivationally related)
- (suomi) maanalainen (synonyymi)