Subdued apartment indeed (8)
I believe the answer is:
deflated
'subdued' is the definition.
Both the answer and definition are adjectives. Perhaps you can see an association between them that I can't see?
'apartment indeed' is the wordplay.
I cannot really see how this works, but
'apartment' could be 'flat' (synonyms) and 'flat' is located in the answer.
The remaining letters 'deed' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for deflated that I've seen before include "Let out air or gas from" , "Put down" , "Depressed like punctured balloon" , "Collapsed due to release of gas" , "Lost self-esteem - or gas?" .)