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hella loosely translates to 'very' (also can be 'extremely'). Helladumb translates loosely to 'very dumb' or 'extremely dumb'
The website you suggested was helladumb!
by HDPirate34 June 12, 2007
4 0
when some thing is hella dumb, it means over the top STUPID
Paris Hilton said: does wal-mart sell walls.

OMG! that was "hella dumb"
by wordsayword May 07, 2008
11 2