One performing right inside worshipping (7)
I believe the answer is:
adoring
'worshipping' is the definition.
(I've seen this before)
'one performing right inside' is the wordplay.
'one' becomes 'a'.
'performing' becomes 'doing' ('do' can be a synonym of 'perform'**).
'right' becomes 'r' (common abbreviation).
'inside' indicates putting letters inside.
'doing' enclosing 'r' is 'doring'.
'a'+'doring'='ADORING'
(Other definitions for adoring that I've seen before include "Worshipping; admiring" , "Giving great love" , "Being very fond of" , "Extravagantly indulgent" , "Loving, worshipping" .)