Be in the loop phrase informal
To be told about and/or included in something, such as a plan or project, especially that which involves or connects to a particular group.
He thought you shouldn't be kept in the dark but should be in the loop as soon as possible.
We've had some new members, so they also need to be in the loop about the plan.
The boss is always in the loop about how the company's fund is spent.
1. If someone is on top of a situation, they are in absolute control or aware of it.
2. In addition to something
3. Too close to someone or something
Very busy (with something); mired in something; given too much of something.
1. Used to say that someone is in the water with sharks.
2. To be involved with devious or hazardous people.
To become involved in something that is not one's business or duty in an invasive or inquisitive manner.
If you are mixed up in something, you are involved in something, especially something illegal or dishonest.
This phrase comes from military terminology, with officers in command needing to pass on orders to the soldiers. Keeping lines of communication open and regularly updated in a feedback loop, so all personnel are informed.
To say, or believe something or someone that seems completely crazy, delusional, or stupid
You spent 1000$ on a new pair of shoes! It is insanely crazy. You need your head examined.