Clandestineness [noun]

● Clandestinity

● Concealment

● Covertness

● Private

● Secretiveness

● Secretness

● Silence

● Stealth

● Confidentiality

● Surreptitiousness

● Clandestineness

● Abscond

● Absconding

● Action officer

● Agent

● Backbite

● Backdoor

● Backstair

● Backstairs

● Boatlift

● Bootleg

● Bootlegging

● Cabal

● Camorra

● Cell

● Cia

● Cira

● Clancular

● Closet

● Connive

● Conniving

● Continuity army council

● Continuity irish republican army

● Counter

● Covert

● Creep

● Creeps

● Dead drop

● Death squad

● Drop

● Eavesdrop

● Espionage

● Exfiltration operation

● Fifth column

● Fifth columnist

● Furtive

● Haganah

● Hidden

● Hugger-mugger

● Illicit

● Intrigue

● Invisible

● Islamic community

● Islamic group

● Jemaah islamiyah

● Kgb

● Mag

● Malaysia militant group

● Malaysian mujahidin group

● Migration

● Nipr

● Nsa

● Oni

● Open

● Operational cell

● Overt

● Peeks

● Peep

● Pocket

● Private

● Privy

● Psyop

● Pundit

● Revolutionary proletarian nucleus

● Rosa

● Saboteur

● Samizdat

● Sas

● Secrecy

● Secret

● Secretively

● Skulk

● Skulking

● Sleeper

● Sly

● Smuggle

● Smuggling

● Sneak

● Sneaking

● Sneek

● Special air service

● Spiers

● Spymaster

● Steal

● Steals

● Stealth

● Stealthy

● Surreptitious

● Tout

● Tradecraft

● Tryst

● Underaid

● Underground

● Underground press

● Underhand

● Underhanded

● Undermine

● Undermining

● Underplot

● Underwork