that does it

idiom

Definition of that does it

1 used to say that one has finished doing something. I just need to sign one more letter. There, that does it.
2 used in angry speech to say that one will not accept or allow something anymore "They say we'll have to wait another hour." "That does it! We're leaving right now!"

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“That does it.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/that%20does%20it. Accessed 13 Jun. 2021.

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