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1. Fantastical is an adjective that describes something that is greater than GREAT!

2. Or it means over the top or too imaginative
"How was your night with that hot girl last night ?"
"It was FANTASTICAL. We did everything possible, if you get what i mean. ;)"
by Thomas Nguyen September 09, 2007
when your mom gives me dome it's Fantastical
the dome that filthy bitch gave me last night was fantastical
by henry reuss November 09, 2006
of or relating to two objects used in the same sentence or idea that do not normally belong together.

mathematically equal to one (1) lightyear + one (1) standard unit of amazingness
Dragon Pillow? Thats fantastical.
by Mike October 29, 2007