Top Definition
A word we use all the time where I work. It's when a software company releases an update to the program that introduces more bugs than it fixed. It is, of course, a contraction of "fucked up" and "update".
Chris: You get that buggy software doing what you want yet?

Madmann: No, they sent me a fupdate. I'm about a week behind where I was yesterday....
by Madmann October 14, 2005
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