Scoundrel I sacked, right away getting endorsed (8)
I believe the answer is:
ratified
'endorsed' is the definition.
(thesaurus)
'scoundrel i sacked right away' is the wordplay.
I cannot really see how this works, but
'scoundrel' could be 'rat' (I've seen this in other clues) and 'rat' is found in the answer.
'i' is present in the answer.
This may be the basis of clue (or it may be nonsense).
'getting' acts as a link.
Can you help me to learn more?
(Other definitions for ratified that I've seen before include "Gave formal permission" , "Of treaty, agreed and signed" , "Officially adopted" , "Formally confirmed" , "Formally approved and given legal authority" .)
