Fantastic

a. [Fr. fantastique, Pr. fantastic, Sp., Pg., & It. fantastico, Gr. φανταστικός, from φαντάζειν. See supra.]

1. Producing or existing only in imagination; fanciful; imaginary; not real; chimerical.
2. Having the nature of a phantom. Shak.
3. Indulging the vagaries of imagination; exhibiting fantasy; capricious; as, fantastic minds; a fantastic mistress.
4. Resembling fantasies in irregularity, caprice, or unreality; irregular; wild; capricious.

There at the foot of yonder nodding beech, That wreathes its old fantastic roots so high. Gray. Syn.—Fanciful; imaginative; ideal; visionary; capricious; chimerical; whimsical. See FANCIFUL.