Went to bed weary again? (7)
I believe the answer is:
retired
'went to bed' is the definition.
('retire' can be a synonym of 'go to bed')
'weary again?' is the wordplay.
'weary' becomes 'retire' (retiring is a kind of wearying).
'again?' becomes 'd' (I am not sure about this - if you are sure you should believe this answer much more).
'retire'+'d'='RETIRED'
Can you help me to learn more?
(Other definitions for retired that I've seen before include "No longer working" , "Withdrew from active participation" , "Finished work" , "Gone to bed" , "No longer active in work or profession" .)