- fantastic, fantastical - existing in fancy only; "fantastic figures with bulbous heads the circumference of a bushel"- Nathaniel Hawthorne
Antonyms: real, existent (indirect, via unreal)
- antic, fantastic, fantastical, grotesque - ludicrously odd; "Hamlet's assumed antic disposition"; "fantastic Halloween costumes"; "a grotesque reflection in the mirror"
Antonym: familiar (indirect, via strange)