bugger up

Verb

bugger up (third-person singular simple present buggers up, present participle buggering up, simple past and past participle buggered up)

1. (Australia, Ireland, New Zealand, UK, informal) To break or spoil something, or make it inoperative, useless etc.
   • I've buggered up the sudoku somehow and can't finish it.
   • Well, he only buggers up one sentence, and that's the first one. He says, 'Shut up, blek.' But from that point on, it was OK because I helped him with it. If I'd been there, I would have told him to say, 'Shut up, black', exactly the same as an American accent.2016 March 15, David Dale, “John Jarratt talks new show Territory Cops and a murderous return in Wolf Creek”, in The Sydney Morning Herald

   Synonyms:

   booger up

2. (Australia, Ireland, New Zealand, UK, informal) To injure or harm (someone).