fantastique, from Greek phantastikos, from phantasia; FANTASY
1extremely good, attractive, enjoyable etc:
You look fantastic!
It's a fantastic place, really beautiful!
2spokenused when someone has just told you something good [= excellent, wonderful]:
'I've passed my driving test.' 'Fantastic!'
That's fantastic news!
3a fantastic amount is extremely large [= huge]:
Kids spend fantastic amounts of money on CDs.
4a fantastic plan, suggestion etc is not likely to be possible:
a fantastic scheme
5 [only before noun]a fantastic story, creature, or place is imaginary and is very strange and magical [= fantastical]:
fantastic tales of dragons and fairy queens
WORD FOCUS: good WORD FOCUS: good very good:excellent, fantastic, wonderful, great, terrific, neatAmerican English, superb, amazing, outstanding, brilliant, impressive, fine, first-class, out of this world of good quality:high quality, top quality, superior, deluxe, classy morally good:decent, virtuous, respectable, honourableBritish English/honorableAmerican English, upright, beyond reproach ➔ See alsogood
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.