is similar to
suppressed quietly or indirectly
is similar to
(used of information or news) kept secret by using influence
"hushed-up stories sometimes leak out"
is similar to
subdued or overcome
"the quelled rebellion"; "an uprising quenched almost before it started"; "a squelched rumor"
is similar to
not (or not yet) made available for distribution or publication
"someone leaked the unreleased announcement"; "a film that remained unreleased for years"