secrecy

• A little birdie told me

  This phrase is used to indicate that one has received information from a secret or anonymous source, without revealing who that source is.

• Keep it under wraps

  To maintain something in secrecy or confidentiality, preventing its disclosure to others.

• Hold 'em close to your chest

  To keep information, plans, or intentions secret and private, often to maintain an advantage or surprise.

• To keep something under wraps

  To maintain secrecy or confidentiality about something until it is ready to be revealed.

• Under wraps

  Kept secret or confidential, not yet revealed to the public.

• Under the cloak of

  To do something secretly or surreptitiously, often using a pretense to hide the true nature of an action.

• My lips are sealed

  I promise to keep a secret and will not tell anyone.

• Like a thief in the night

  To occur suddenly, secretly, and without any prior warning or expectation.

• A reliable source tells me

  This phrase is used to introduce information that the speaker claims to have received from a trustworthy but unnamed informant.

• Keep it under your hat

  To keep a secret or refrain from sharing confidential information.

• Keep things under wraps

  To maintain secrecy about something, preventing it from being revealed or publicly known.

• Keep a lid on something

  To maintain secrecy or control over information, preventing it from becoming public or a situation from escalating.