Pure, to be exact (4)
I believe the answer is:
true
I believe this is a double definition.
'pure' is the first definition.
(thesaurus)
'be exact' is the second definition.
(thesaurus)
'to' acts as a link.
(Other definitions for true that I've seen before include "Genuine, loyal" , "Factually correct" , "Genuine, real" , "Loyal; authentic" , "not showing 12 [DISHONESTY]" .)