The Collaborative International Dictionary
Clandestineness
Clandestine \Clan*des"tine\, a. [L. clandestinus, fr. clam
secretly; akin to celare, E. conceal: cf. F. clandestin.]
Conducted with secrecy; withdrawn from public notice, usually
for an evil purpose; kept secret; hidden; private; underhand;
as, a clandestine marriage.
--Locke.
Syn: Hidden; secret; private; concealed; underhand; sly; stealthy; surreptitious; furtive; fraudulent. -- Clan*des"tine*ly, adv. -- Clan*des"tine*ness, n.
Wiktionary
clandestineness
n. The state or quality of being clandestine.