19th century UK. Unknown etymology. Farmer (1903) categorises the term as costermongers' slang.
- (Britain, informal) Boisterous, rowdy, saucy, dissipated, or risqué.
1898, Hichens, Robert Smythe, The Londoners, page 280:
- "Tell us a good story, Rodney — one of your rorty ones." / Mr. Rodney shrivelled. / "I fear," he murmured — "I fear I am scarcely in the — er — rorty vein to-night."
2007 May 31, “Lotus 2-Eleven - Road Test First Drive”, in Autocar:
- Any speed any gear it doesn't matter. The 2Eleven's got an enormous powerband huge performance and the rortiest exhaust I've heard in an Elise-based car
- For more examples of usage of this term, see Citations:rorty.