Lion fact I broadcast was fake news (9)
I believe the answer is:
fictional
'fake news' is the definition.
Both the answer and definition are adjectives. Maybe you can see a link between them that I can't see?
'lion fact i broadcast' is the wordplay.
'broadcast' indicates anagramming the letters (letters scattered or cast around).
'lion'+'fact'+'i'='lionfacti'
'lionfacti' with letters rearranged gives 'FICTIONAL'.
'was' is the link.
Can you help me to learn more?
(Other definitions for fictional that I've seen before include "Made-up" , "Conceived by the imagination" , "Not true" , "Unreal" , "Like novel" .)