Top Definition
A portmanteau of fantasy and abysmal, meaning something incredible or amazing that is saddening or has no chance of happening; an "anti-super"

Alternate spelling is fantismal for those that don't like odd letters.
1. *pure angel descends from the sky*
A: Hey man, do you think I can get with her?
B: No way man, your chances are fantysmal.

2. I thought that I could totally defuse that bomb, but then I realized my chances were were fantysmal.

3. I had a fantysmal idea: I'd tell her I'd love her on the rooftop during the full moon, where she would glow radiantly.
by Port Man's Toe December 26, 2009
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