Has to remake promises (5)
I believe the answer is:
oaths
'promises' is the definition.
(I've seen this before)
'has to remake' is the wordplay.
'remake' indicates an anagram.
'has'+'to'='hasto'
'hasto' with letters rearranged gives 'OATHS'.
(Other definitions for oaths that I've seen before include "Swear words" , "truths may be established by them" , "professions of loyalty" , "Imprecations" , "Curses - words of honour?" .)