Synonyms of fantastical

1 Syllable
wild, weird, mad
2 Syllables
strange, glorious, wondrous, absurd, ripping, superb, splendid, crazy
3 Syllables
fanciful, notional, amazing, terrific, astounding, chimeral, invented, divine, fantastic, far-fetched, dreamed-up, prodigious, stupendous, chimeric, outlandish, breathtaking, wonderful, bizarre, fabulous
4 Syllables
awesome, ridiculous, spectacular, incredible, astonishing, sensational, remarkable
5 Syllables
unbelievable, extraordinary