Recover, say, being seen in shower (6)
I believe the answer is:
regain
'recover' is the definition.
('regain' can be a synonym of 'recover')
'say being seen in shower' is the wordplay.
'say' becomes 'eg'.
'being seen in' is an insertion indicator.
'shower' becomes 'rain' ('rain shower' can be a synonym of 'shower').
'eg' inserted inside 'rain' is 'REGAIN'.
(Other definitions for regain that I've seen before include "Get back (previously owned object)" , "Win back" , "Recover, retrieve" , "Get back, recover the use of" , "Take back (the Ashes, for example)" .)