Make sense (3,2)
'make sense' is the definition.
(synonyms)
This is all the clue.
'make sense' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for add up that I've seen before include "Reckon" , "Put together (numbers)" , "Total; make sense" , "Point to a reasonable conclusion" , "Sum - make sense" .)