Explain poor clue: answer in new edit (9)
I believe the answer is:
elucidate
'explain' is the definition.
(I know that elucidate is a more specific form of the action clarify)
'poor clue answer in new edit' is the wordplay.
'poor' indicates an anagram.
'answer' becomes 'a' (abbreviation eg in Q and A).
'in' is an insertion indicator.
'new' is an anagram indicator.
'edit' anagrammed gives 'idte'.
'a' put within 'idte' is 'idate'.
'clue' anagrammed gives 'eluc'.
'eluc'+'idate'='ELUCIDATE'
(Other definitions for elucidate that I've seen before include "Make clear and more comprehensible" , "Make clear, explain" , "Shed light on, clarify" , "Shed light upon" , "Throw light on a problem, make clear (9)" .)