Green’s Dictionary of Slang

1. energy, vitality.

1885

Referee 23 Aug. in Ware (1909) 210/2: Before that she reminded me a little too much, in her rortyness, of the seriocomic lady who sings ‘What cheer “Ria”, Ria’s on the job.’.

2. fraud, deception.

1904		Sun. Times (Perth) 15 May 1/1: The Perth hotel known as the Totties’ turn in keeps up its reputation for rortiness.
1910		Sun. Times (Perth) 27 Mar. 2nd sect. 9/1: They Say [...] That the ‘West Australian’ badly needs a censor of ads. [...] half Perth is sniggering over a recent sample of rortiness.