fantastic

Concise Oxford English Dictionary © 2008 Oxford University Press:
fantastic/fanˈtastɪk/

▶adjective

• 1 imaginative or fanciful; remote from reality.

• 2 informal extraordinarily good, attractive, or large.

– derivatives
fantastical adjective,
fantasticality noun,
fantastically adverb.

– origin ME: from OFr. fantastique, via med. L. from Gk phantastikos, from phantazein ‘make visible’, phantazesthai ‘have visions’, from phantos ‘visible’.