25B6; adjective SECRET, secretive, clandestine, covert, furtive, surreptitious; underhand, devious, stealthy, sneaky, backstairs, hugger-mugger, cloak-and-dagger, under-the-counter; informal hush-hush.
HOLE-AND-CORNER
Meaning of HOLE-AND-CORNER in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012