"Dinkum" is an Australian slang term that means being authentic, genuine, or true. It is often used to describe something or someone that is honest and trustworthy. Full definition
I'm a true blue fair dinkum Aussie larrakin from Down Under (or Australia, if you're not a fan of slang). (thecriticalcritics.com)
That's for two reasons, first because an 80 kg lighter F - Type with more power is news we can all celebrate, but also because it's our first chance to see how fair dinkum Jaguar's new Special Vehicle Operations is going to be. (ausmotive.com)
Get the first turbo - diesel ever offered by Toyota's luxury marque in Australia out in some fair dinkum outback country and its qualities shine through. (motoring.com.au)