fair dinkum

Từ điển Oxford Advanced Learner 8th

ˌfair ˈdinkum 7 [fair dinkum] BrE NAmE adjective, adverb (AustralE, NZE, informal)
1. used to emphasize that sth is genuine or true, or to ask whether it is
•It's a fair dinkum Aussie wedding.
•‘Burt's just told me he's packing up in a month.’ ‘Fair dinkum?’
2. used to emphasize that behaviour is acceptable
•They were asking a lot for the car, but fair dinkum considering how new it is.