(adjective) A form of "Fantastic"; Wonderful or cool.
"Bubble Tea: Because it is more fantastical."
by Seishi March 3, 2003
The way that old lady went ape-shit on that guy was fantastical!
by DemonMoose February 14, 2007
To be better than just plain fantastic and amazing. To be cute/adorable and be even better than most people think. Few people know themselves as Fantastical, but ones who prove themselves to be are known. And some who are Fantastical are dubbed by there friends, only true friends see dub you as Fantastical.

So if you are Fantastical....Hello Star-Shine.
You are a Fantastical person without even trying.
by SamMI*-*CoLoURs August 7, 2010
It is the combination of fantastic and magical
That chic has Fantastical titties
by Buck naked April 4, 2012
verb trans. rare

1. To make something overimaginative or fantastic.

2. To do a fantastic job masturbating.
1. BOBBY: I do not think I have fantasticated these accounts.

2. BOBBY: hey Suzie Q...
SUZIE: yeah Bobby?
BOBBY: last night I thought about you naked, so I decided to fantasticate.
SUZIE: oh...
by caitlin Perry January 11, 2008
The catchphrase of the Ninth Doctor, played by Christopher Eccleston
Rose...Before I go, I just wanna tell you, you were fantastic. Absolutely fantastic. And d'you know what? So was I.
by DoctorGeek March 19, 2011