Synonyms of fantastical

Adjective

1. fantastic, fantastical, unreal (vs. real)

usage: existing in fancy only; "fantastic figures with bulbous heads the circumference of a bushel"- Nathaniel Hawthorne

2. antic, fantastic, fantastical, grotesque, strange (vs. familiar), unusual

usage: ludicrously odd; "Hamlet's assumed antic disposition"; "fantastic Halloween costumes"; "a grotesque reflection in the mirror"