adj.
- imaginative or fanciful; remote from reality.
- informal extraordinarily good, attractive, or large.
Derivative
- fantastical adj.
- fantasticality n.
- fantastically adv.
Etymology
ME: from OFr. fantastique, via med. L. from Gk phantastikos, from phantazein ‘make visible’, phantazesthai ‘have visions’, from phantos ‘visible’.