What is the meaning of Fantastic?

Wonderful; marvelous; excellent; extraordinarily good or great (used especially as an intensifier).

Existing in or constructed from fantasy; of or relating to fantasy; fanciful.

Not believable; implausible; seemingly only possible in fantasy.

Resembling fantasies in irregularity, caprice, or eccentricity; irregular; grotesque.

A fanciful or whimsical person.

fantastic

Source: wiktionary.org