mythomaniac
noun
mytho·ma·ni·ac
| \ -ˈmā-nē-ˌak
\
\
Medical Definition of mythomaniac
(Entry 1 of 2)
: an individual affected with or exhibiting mythomania
mythomaniac
adjectiveMedical Definition of mythomaniac (Entry 2 of 2)
: of, relating to, or affected with mythomania