Meanings

general secretary (of the Workers' Party of Korea or the Communist Party of Vietnam)

confidential information

non-disclosure agreement

sensitivity indication

cover-up

book of secrets

(crime of) revealing a secret

the crime of revealing a secret

top secret mission

numerology

confidential document

closely-guarded secret

confidentiality

sex toy

recording audio without consent

secret sharing

secretive

making secret

privilege (e.g. "attorney-client privilege")

privacy of communications