fantastic
adjective
°Existing in or constructed from fantasy; of or related to fantasy; fanciful.
"He told fantastic stories of dragons and goblins."
°Not believable; implausible; seemingly only possible in fantasy.
"The events were so fantastic that only the tabloids were willing to print it."
synonyms: fabulous, fantastical, foolish, hare-brained more» , unrealistic, wild, brilliant, splendid, super, wonderful