A
dismissive term used to stop a
superfluous avenue of conversation, or that the current discussion goes without saying.
A dismissive term is used to
curtail a digressive conversation.
It can mean: "let's move on, we can discuss that later".
It also mean: "we've had this discussion before, and I still agree with you"
Often used when it's clearly established that the parties in the conversation agree with each other anyway.