/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.