Powerful people lacking furniture? (8)
I believe the answer is:
notables
'powerful people' is the definition.
'notables' can be an answer for 'people' (notable is a kind of person). I'm not sure about the 'powerful' bit.
'lacking furniture?' is the wordplay.
'lacking' becomes 'no' (eg lacking money means with no money).
'furniture?' becomes 'tables' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'no'+'tables'='NOTABLES'
Can you help me to learn more?
(Another definition for notables that I've seen is " Celebrities".)