Celebrated being doomed, say (5)
I believe the answer is:
feted
'celebrated' is the definition.
('fete' can be a synonym of 'celebrate')
'doomed say' is the wordplay.
'doomed' becomes 'fated' ('fate' can be a synonym of 'doom').
'say' shows a homophone (sound like).
'fated' sounds like 'FETED'.
'being' is the link.
(Other definitions for feted that I've seen before include "Honoured lavishly" , "Lionised" , "Wined, dined and honoured" , "Honoured with festivities" , "Wined and dined, celebrated" .)