保密

bǎomì
  1. to keep sth confidential
  2. to maintain secrecy

CEDICT

Entry Composition

1 保 bǎo
  1. to defend; to protect; to keep
  2. to guarantee; to ensure
  3. (old) civil administration unit in the baojia 保甲 bǎojiǎ system
2 密 mì
  1. dense; close; thick
  2. intimate; close
  3. (bound form) secret; confidential
  4. (Internet slang) to send a private message to (sb); to DM