Incestuous son Opus Dei corrected (7)
I believe the answer is:
oedipus
'incestuous son' is the definition.
The definition suggests a singular noun which matches the answer.
'opus dei corrected' is the wordplay.
'corrected' is an anagram indicator.
'opus'+'dei'='opusdei'
'opusdei' is an anagram of 'OEDIPUS'.
Can you help me to learn more?
(Other definitions for oedipus that I've seen before include "Tragic king of Thebes (with a complex)" , "person who married his mother" , "legendary riddle solver" , "King known for complex" , "Mythical Greek king of Thebes" .)