Needy warriors welcoming extra hut (12)
I believe the answer is:
impoverished
'needy' is the definition.
('impoverished' can be a synonym of 'needy')
'warriors welcoming extra hut' is the wordplay.
'warriors' becomes 'impi' (I've seen this before).
'welcoming' is an insertion indicator (in sense of 'inviting in').
'extra' becomes 'over'.
'hut' becomes 'shed' (I've seen this before).
'impi' placed around 'over' is 'impoveri'.
'impoveri'+'shed'='IMPOVERISHED'
(Other definitions for impoverished that I've seen before include "Made poor" , "lacking funds" , "Penniless" , "stony broke" .)