Barely sufficient society, principally one advancing cash (7)
I believe the answer is:
slender
'barely sufficient' is the definition.
(I've seen this before)
'society principally one advancing cash' is the wordplay.
I cannot really see how this works, but
'society' could be 's' (common abbreviation in names of organisations) and 's' is found within the answer.
'cash' could be 'l' (The pound sterling symbol is an elaborate L) and 'l' is found within the answer.
The remaining letters 'ender' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for slender that I've seen before include "Thin and graceful" , "Ann Page's suitor" , "Barely sufficient (means)" , "short of a pound or two of flesh?" , "Fine" .)