Kind of agree with Raymond that it's ambiguous (4,4)
I believe the answer is:
grey area
'kind of agree with raymond that it's ambiguous' is the definition.
The definition suggests a singular noun which matches the answer.
'kind of agree with raymond' is the wordplay.
'kind of' is an anagram indicator.
'with' is an insertion indicator.
'raymond' becomes 'yar' (I can't justify this - if you can you should give a lot more credence to this answer).
'agree' anagrammed gives 'greea'.
'greea' enclosing 'yar' is 'GREY AREA'.
Can you help me to learn more?
(Other definitions for grey area that I've seen before include "Where things are not black and white" , "One of undefined boundaries" , "One of unclear boundaries" , "Ill-defined matter" , "Situation not clear-cut" .)