tight-lipped
stonewall
informationlessness
breast one's cards
undisclosing
journalist's privilege
nondisclosed
close
noninformative
tightlipped
be not to know
closelipped
closemouthed
irrevealable
nonconcurrence
secretive
cagey
undivulgeable
unassuring
unknowing
keep quiet
unwitting
shut one's mouth
palter
understatement
keep one's mouth shut
unknowledgeable
tergiversate
ignorant
equivocate
prevaricate
nonmention
beat around the bush
unrevealable
unconfidential
uninforming
undivulged
unreconnoitered
priest-penitent privilege
leave to the imagination
unhoaxable
draw a blank
nonspeculation
undecipherability
keep to oneself
no comment
physician-patient privilege
answerless
detaillessness
newsless