Adored by fans, one did lose out (8)
I believe the answer is:
idolised
'adored' is the definition.
(I know that adored can be written as idolised)
'one did lose out' is the wordplay.
'one' becomes 'i' (Roman numeral).
'out' indicates an anagram (out can mean wrong or inaccurate).
'did'+'lose'='didlose'
'didlose' with letters rearranged gives 'dolised'.
'i'+'dolised'='IDOLISED'
'by fans' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for idolised that I've seen before include "Revered, greatly loved" , "Worshipped like graven image" , "Adored and worshipped" , "placed on a pedestal" , "Hero-worshipped" .)