Misgivings of backer should start to subside after Thursday (6,8)
I believe the answer is:
second thoughts
'misgivings of backer' is the definition.
The answer and definition can be both related to thinking as well as being plural nouns.
Perhaps there's a link between them I don't understand?
'should start to subside after thursday' is the wordplay.
I cannot quite see how this works, but
'should' could be 'ought' (synonyms) and 'ought' is present in the answer.
'thursday' could be 'th' (common abbreviation) and 'th' is located in the answer.
The remaining letters 'seconds' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for second thoughts that I've seen before include "Change of mind" , "change of heart" , "revised opinion" , "change of plan" , "Change of opinion possibly" .)