Uplifting theatre activities consume partner (6)
I believe the answer is:
spouse
'partner' is the definition.
('spouse' can be a synonym of 'partner')
'uplifting theatre activities consume' is the wordplay.
'uplifting' shows that the letters should be reversed in order.
'theatre activities' becomes 'ops' (surgical operations may done in a theatre).
'consume' becomes 'use'.
'ops' written backwards gives 'spo'.
'spo'+'use'='SPOUSE'
(Other definitions for spouse that I've seen before include "Very hot and dry" , "Other half" , "Married partner" , "Husband or wife" , "Partner in marriage" .)