English idioms relate to Truth, Secrecy, & Deception - Keeping Secrets

a secret reason behind a plan or action

said to ask someone to keep a conversation secret

to tell other people what is supposed to stay secret

used to refer to an agreement made in order keep someone from sharing or revealing information that should be otherwise publically known

to not let something become revealed to others

to refrain from revealing one's true intentions or plans

to avoid sharing a secret with others

to avoid telling about something to others

to decide to remain silent about something, particularly out of fear of making a situation worse

said as a promise or request to not tell something to anyone else

used when one says that one will not reveal secret information

something about a person's past that they do not want to reveal or mention because it is embarrassing or unpleasant

used to refer to a room, in which a group of people knows or witnesses something that others do not

to share information that is secret or private

to keep one's opinions, plans, or intentions secret

to not let other people know about something

a person who can be trusted with one's secrets

to conceal or destroy evidence of one's activities or whereabouts to avoid detection or punishment

to try to conceal flaws or problems temporarily, without addressing or solving them properly

to keep something secret or confidential and not to reveal it to others

a piece of information that one refuses to share with anyone