No longer moody dear? (9)
I believe the answer is:
expensive
'dear?' is the definition.
(similar in meaning)
'no longer moody' is the wordplay.
'no longer' becomes 'ex' (prefix meaning former or onetime).
'moody' becomes 'pensive' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ex'+'pensive'='EXPENSIVE'
Can you help me to learn more?
(Other definitions for expensive that I've seen before include "Highly-priced" , "Costing a lot of money" , "not going for a song" , "High in price" , "Charging a lot" .)