Apocryphal
/əˈpɒkɹəfəl/
adjective
Of, or pertaining to, the Apocrypha.
(by extension) Of doubtful authenticity, or lacking authority; not regarded as canonical.
“Many scholars consider the stories of the monk Teilo to be apocryphal.”
(by extension) Of dubious veracity; of questionable accuracy or truthfulness; anecdotal or in the nature of an urban legend.
“There is an apocryphal tale of a little boy plugging the dike with his finger.”
Synonyms: allonymous, spurious, anecdotal