A feeling that means fantastic and terrific at the same time! Your stomach starts to feel all in knots and does flips...while you have butterflies. That's when you know that something is fantasterrific.
He just gives me this fantasterrific feeling and it's almost indescribable.
by milkyway December 20, 2006
fantastic and terrific, both at the same time!
Disneyland is the most fantasterrific place ever!
by Verena and Allie October 26, 2001