Bother about worship (5)
I believe the answer is:
adore
'worship' is the definition.
(I've seen this before)
'bother about' is the wordplay.
'bother' becomes 'ado' (both can mean fuss or commotion).
'about' becomes 're' ('re' means regarding or about).
'ado'+'re'='ADORE'
(Other definitions for adore that I've seen before include "Worship and glorify" , "Treasure" , "Worship, venerate" , "Love (someone) deeply" , "Love greatly" .)