1. relating to or having the nature of myth (Freq. 1) - a novel of almost mythic consequence • Pertains to noun: myth • Derivationally related forms: myth 2. based on or told of in traditional stories; lacking factual basis or historical validity - mythical centaurs - the fabulous unicorn • Syn: fabulous, mythical, mythologic, mythological • Similar to: unreal • Derivationally related forms: mythology (for: mythological), mythology (for: mythologic), myth (for: mythical), myth, fable (for: fabulous)