Not believable; implausible; seemingly only possible in fantasy.
Existing in or constructed from fantasy; of or relating to fantasy; fanciful.
Resembling fantasies in irregularity, caprice, or eccentricity; irregular; grotesque.
Wonderful; marvelous; excellent; extraordinarily good or great (used especially as an intensifier).
Anything particularly excellent of its kind, especially a goal in sports or a beautiful woman.