relieve
unbosom
breast one's cards
disembosom
conceal
draw out
kleptography
screen
secretive
closelipped
tightlipped
closemouthed
restrict
close
shut one's mouth
keep quiet
keep one's mouth shut
skinny
snow
blackwash
chew the meat and spit out the bones
yield up
dirty laundry
secretively
give someone the runaround
keep
give away
acquisitive
unlearn
keep one's cards close to one's chest
sell someone out
befog
spill the tea
rake up
expurgate
wise
facticide
wise to
knowing
antisecrecy
cover-up
concealment
concealing
unconfound
hiding
selective memory
darkness
Streisand effect
uncover
siloism