Top Definition
Public wi-fi connection problems and failures.
I've been dealing with the coffee shop sigh-fi for the last 30 minutes.
by bobwithanx December 29, 2009
A exasterbated "sigh", could pertain to anything related to science fiction.
Dude1: FFS it's not working!!
Dude2: sighfi
Dude1: lol wtf?
Dude2: noob!
by BakerZA December 11, 2007
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