slang, Australia. : first-rate, excellent.
What does Bonzer mean?
Ask an Aussie to name a truly Australian word, and they might yell "Bonzer!" Bonzer, sometimes also spelled bonza, means "first-rate" or "excellent," and it is the Australian equivalent of the American "awesome": "It's a good clean game ... and the standard is red hot," Thies said.
How do you use Bonzer?
The groundswell of support for the foursome would probably have ensured a bonzer year for them anyway but a little extra push is always welcome. I wouldn't bet against her becoming a bonzer handler and I'll raise a glass of grog to her success.