ooze
under the table
bust out
deconvolver
nigger in the woodpile
predisponent
cryptadia
offshoot
underwrapped
underhanded
latitancy
on the down-low
secretomal
hidness
under the covers
compulsitor
unrevealed
revealee
oversecrete
underground
hidy
lay open
darkness
secretive
ensnarement
semisecretive
exculpation
yield up
tip one's hand
vapour trail
confidentiality
escape
masked
hideling
subterranean
finding
spill the beans
talk
secretively
juxtaparanodal
something nasty in the woodshed
give the game away
hiddenly
betrayingly
abducent
supersecret
hypersecrete
postsecretory