[syn: clandestine, cloak-and-dagger, hole-and-corner(a), hugger-mugger, hush-hush, secret, surreptitious, undercover, underground]
WordNet (r) 3.0 (2006):
hole-and-corner
    adj 1: relating to the peripheral and unimportant aspects of
           life; "a hole-and-corner life in some obscure community"-
           H.G.Wells [syn: hole-and-corner, hole-in-corner]
    2: 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" [syn: clandestine,
       cloak-and-dagger, hole-and-corner(a), hugger-mugger,
       hush-hush, secret, surreptitious, undercover,
       underground]