Shame cider ruined with gas (8)
I believe the answer is:
disgrace
'shame' is the definition.
(synonyms)
'cider ruined with gas' is the wordplay.
'ruined with' is an anagram indicator.
'cider' anagrammed with 'gas' can make 'DISGRACE'.
(Other definitions for disgrace that I've seen before include "scandal" , "Cadger is in state of ignominy" , "State of dishonour" , "Loss of honour" , "Loss of reputation as the result of dishonourable action" .)