Lacks (5)
'lacks' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for needs that I've seen before include "shopping-list, say" , "Essentials" , "Necessitates" , "'..... must when the devil drives'" , "Can't do without" .)
(Another definition for hasnt that I've seen is " Is without".)