noun
defines the underworld or netherworld, the world below.
The Devils realm is the thirdworld.
When someone talks down to you or belittles you because they feel as though they are a class or socioeconomic status above you and/or your actions.
Ewwww! Your drinking house swill? Remove it from my presence and bring me chilled Patron only! Yeah, I just thirdworlded you!
To severely degrade in quality or performance.
Man, that subprime crisis sure has the potential to thirdworldize the US economy.