This is it


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This is it.

This is the time, place, or thing that we have been looking or waiting for. This is it. This is the chance you've been waiting for! This is it. This is my stop. I have to get off the bus.
See also: this

this is ˈit

(informal)
1 said when you are agreeing that a point made by somebody is important: ‘People prefer their cars to public transport, you see.’ ‘Well, this is it.’
2 said when you have come to an important moment: Well this is it, Mike. Good luck in Australia. Don’t forget to write...
See also: this