Green’s Dictionary of Slang

(Aus.) a confidence trickster.

1939		K. Tennant Foveaux 311: In this crowd of low heels, quandongs and ripperty men, she looked at her ease and yet not of them.
1985		P. Carey Illywhacker 245: ‘What’s an illywhacker?’ [...] A spieler [...] a trickster. A quandong. A ripperty man. A con-man.
2004		K. Murray Becoming Billy Dare 156: ‘I don’t reckon he looks like a ripperty man,’ she said, ‘though if he spends enough time with you, Nugget Malloy, he’s bound to take to thieving.’.