Definition of Ripper

Noun: ripper ri-pu(r)

A murderer who slashes the victims with a knife
"Jack the Ripper was probably a madman"
[Austral] (dated slang) a remarkable or excellent thing or person
"that story was a ripper";
- corker, pearler [Austral]

Adjective: ripper ri-pu(r)
Usage: Austral

Very good
"he did a ripper job";
- bang-up, bully, corking [Brit, informal], cracking [Brit, informal], dandy, great, groovy, keen, neat, nifty, not bad, peachy, slap-up, swell, smashing, grouse [Austral, NZ], lovely