that's done it! Meaning in the Cambridge English Dictionary
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Meaning of “that's done it!” in the English Dictionary

"that's done it!" in British English

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that's done it!

UK informal (US that did it!) said when someone or something has ​causeddamage or a ​difficulty: "That's done it!" said Anna as she ​looked at the ​damage. "Now I really will have to get a new ​car."
(Definition of that's done it! from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
Translations of “that's done it!”
in Chinese (Simplified) 这可糟了!…
in Chinese (Traditional) 這可糟了!…