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That's done it Meaning in English

expression

ˈðæts/ /ˈdən/ /ˈɪt/, /ɪt
THATS DUN-it
ðæts/ /dˈʌn/ /ˈɪt
THATS DUN-it

Definition

Used to say something important or problematic has just happened, especially as a direct result of an action. It usually means you have caused an effect, often negative or irreversible.

Usage & Nuances

Informal, often said after causing a problem or when something irreversible just happened due to an action. Sometimes used humorously or with frustration. Common after accidents or mistakes. Don't use in formal writing.

Example Sentences

Oh no, I dropped the cake. That's done it.

basic

You unplugged the computer before saving. That's done it.

basic

The car won't start? That's done it for our trip.

basic

Well, that's done it—there's no way to fix the broken screen now.

natural

Great, you spilled coffee on the report. That's done it!

natural

If you weren't already in trouble, that's done it!

natural