Requirement (4)
'requirement' is the definition.
(synonyms)
This is all the clue.
(Other definitions for need that I've seen before include "Lack - demand" , "Call" , "Require; want" , "A condition" , "must have results!" .)
'requirement' is the definition.
(synonyms)
This is all the clue.
(Other definitions for necessity that I've seen before include "Need, exigency" , "Fundamental" , "Requirement" , "Prerequisite - poverty" , "Great need" .)