mythological

adj. of or belonging to mythology; pertaining to group of collective myths; related to the study of myths and legends

The word mythology (from the Greek   mythología, from mythologein to relate myths, from mythos, meaning a narrative, and logos, meaning speech or argument) literally means the (oral) retelling of myths – stories that a particular culture believes to be true and that use the supernatural to interpret natural events and to explain the nature of the universe and humanity. In modern usage, "mythology" is either the body of myths from a particular culture or religion (as in Greek mythology, Egyptian mythology or Norse mythology) or the branch of knowledge dealing with the collection, study and interpretation of myths, also known as mythography.
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Adjective
1. based on or told of in traditional stories; lacking factual basis or historical validity; "mythical centaurs"; "the fabulous unicorn"
(synonym) fabulous, mythic, mythical, mythologic
(similar) unreal
2. of or relating to mythology; dealt with in myths; "mythological stories"
(pertainym) mythology

(a.)
Of or pertaining to mythology or to myths; mythical; fabulous.
  

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