Concluded many are in terrible need (5)
I believe the answer is:
ended
'concluded' is the definition.
('ended' can be a synonym of 'concluded')
'many are in terrible need' is the wordplay.
'many' becomes 'd'.
'are in' is an insertion indicator.
'terrible' is an anagram indicator.
'need' is an anagram of 'ened'.
'd' put inside 'ened' is 'ENDED'.
(Other definitions for ended that I've seen before include "Finished, terminated" , "Culminated" , "Brought to a close" , "Concluded" , "Over; complete" .)