/Spi' fee/ 1. Said of programS having a pretty, clever, or exceptionally well-deSigned interface. "Have you Seen the Spiffy X verSion of empire yet?" ThiS waS common mainStream Slang during the 1940S. 2. Said SarcaStically of a program that iS perceived to have little more than a flaShy interface going for it. Which meaning Should be drawn dependS delicately on tone of voice and context. [Jargon File]