- genuine; authentic.
adjective Australian and NZ informal
- genuine or righta dinkum bloke
- fair dinkum genuine or true: used to emphasize the truth of something or in asking for the truth of something to be confirmedBack to the states? Fair dinkum?
- dinkum oil archaic the truth
1888, “hard work,” Australian slang, of unknown origin, perhaps connected to Lincolnshire dialect. Meaning “honest, genuine” is attested from 1894.