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1.
N. One who sends out mass e-mails
religiously.
Did u see Kenny's e-mail? He's such a super-fiend.
by smeags August 11, 2004
 
2.
One who brings fiending to a new level. Prior to seeing this fiend you've never seen someone so fiendish. Thus, it is sort of like a title until you find the next super-fiend & there is always one lurking & fiending, be sure of that.
She just ate a block of cheddar cheese. She's a superfiend.
by Timothy August 21, 2003