(informal, transitive, intransitive) To ruin unintentionally.
The terrorists have really mucked up our holiday plans.
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Aussie and Kiwi vocabulary — bogan, daggy, brekkie, sheila, bach, jandals — the whole Antipodean lexicon, including outback dialect, surf and beach culture, and Sydney/Melbourne street slang.
See all Australian & NZ slang slang on Slangora.
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(informal, AU, intransitive) To clown around; to have fun, often at the expense of others.
That’s why they’re called the Founders? Yes, because it will be their job to repair a world that millennials have mucked up beyond repair.
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