Each person in the very one-sided event (8)
I believe the answer is:
everyone
'event' is the definition.
(I know that Everyone is a television series episode)
'each person' is the wordplay.
'each' becomes 'every' (synonyms).
'person' becomes 'one' (I've seen this in other clues).
'every'+'one'='EVERYONE'
'in the very one-sided' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for everyone that I've seen before include "All without exception" , "All and sundry" , "Entire group" , "Uncle Tom Cobleigh and all" , "All the people" .)