Extremely anxious about answer, turned over (9)
I believe the answer is:
ransacked
'turned over' is the definition.
(I've seen this before)
'extremely anxious about answer' is the wordplay.
'extremely anxious' becomes 'racked' (I can't justify this - if you can you should give a lot more credence to this answer).
'about' means one lot of letters goes inside another.
'answer' becomes 'ans' (abbreviation for answer).
'racked' placed around 'ans' is 'RANSACKED'.
Can you help me to learn more?
(Other definitions for ransacked that I've seen before include "rifle in the past" , "Rifled" , "Plundered" , "turned upside down?" , "Pillaged" .)