(and) that's that

(and) that's that

That is final; the issue is settled or completed. You are going to your sister's recital and that's that! No more complaining. That's that! I just send the proofs to the printer.
See also: that

that's that

A phrase used to indicate that something is finished or settled. You need to be home by nine o' clock, and that's that. I don't want to hear another thing about it.
See also: that

And that's that.

That is final and nothing more needs to be said. I refuse to go with you and that's that!
See also: and, that

That's that!

Inf. That is the end of that! Nothing more can be done. Tom: Well, that's that! I can do no more. Sally: That's the way it goes. Doctor (finishing an operation): That's that! Would you close for me, Sue? Sue: Nice job, Doctor. Yes, I'll close.

that's that

Also, that takes care of that. There's no more to be said or done; the matter is finished, the issue is settled. For example, Dad's not buying you a television set, and that's that, or We've paid all we owe, and that takes care of that. [Early 1800s]
See also: that

that's that

1. People say that's that to say that something is finished or has been dealt with. Once all my hair had gone I could just say `Well, it's happened and that's that.' `Well that's that, then,' he said with relief. `Now I can go.'
2. People say that's that to show that they will not accept any arguments. We're going out and that's that.
See also: that
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