Sine qua non (4)
'sine qua non' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for need that I've seen before include "A condition" , "must have results!" , "Distressful situation" , "Shortage" , "Necessitate" .)
'sine qua non' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for essential that I've seen before include "Indispensible" , "Vital" , "Indispensable, necessary" , "absolutely neccessary?" , "as oil might be" .)