Fair dinkum (4)
(Other definitions for true that I've seen before include "Veracious" , "A false alternative?" , "Real or correct" , "Corrected" , "Real; loyal" .)
(Other definitions for genuine that I've seen before include "Sincere; authentic" , "Real, true" , "Not fake or counterfeit" , "Native" , "Real, not faked" .)