Claim four made up is pretty unoriginal (9)
I believe the answer is:
formulaic
'pretty unoriginal' is the definition.
I can't judge whether this definition defines the answer.
'claim four made up' is the wordplay.
'made up' indicates anagramming the letters.
'claim'+'four'='claimfour'
'claimfour' anagrammed gives 'FORMULAIC'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for formulaic that I've seen before include "With set expression" , "Predictable" , "Produced by mechanically followed rules" .)