confidential Synonyms

unrevealed back channel withheld trusty trustworthy surrey surreptitious stealthy secretive secret secrecy seclusive quieter sub-rosa under-the-table unreported unreleased unregistered unpublished under wraps top secret undercover nonpublic low profile chummy unrecorded unlisted quarantined privy disentitle dern covert confidentially closet close classified clandestine catlike bosom backstairs backdoor hidden hushed privileged private privacy particularism irrevealable intime intimate