fantastical
1. [ adjective ] existing in fancy only
Synonyms: fantastic
Examples:

"fantastic figures with bulbous heads the circumference of a bushel"- Nathaniel Hawthorne

Related terms: unreal
2. [ adjective ] ludicrously odd
Synonyms: fantastic grotesque antic
Examples:

"Hamlet's assumed antic disposition" "fantastic Halloween costumes" "a grotesque reflection in the mirror"

Related terms: strange
Similar spelling:   fantastically
  fantastic
  fantasist
  fantasia
  fanatical
  fanatically
  fantasy_life
  fantasize
  fantasise