Author said to be one making correction (7)
I believe the answer is:
righter
'to be one making correction' is the definition.
I can't judge whether this definition defines the answer.
'author said' is the wordplay.
'author' becomes 'writer' (synonyms).
'said' shows a homophone (sound like).
'writer' sounds like 'RIGHTER'.
Can you help me to learn more?
(Other definitions for righter that I've seen before include "One who rectifies" , "Person making corrections" , "He sets all straight" .)