Commonplace section of last rites (5)
I believe the answer is:
trite
'commonplace' is the definition.
('trite' can be a synonym of 'commonplace')
'section of last rites' is the wordplay.
'section of' indicates a hidden word.
'TRITE' is hidden within 'last rites'.
(Other definitions for trite that I've seen before include "used till novelty's worn off" , "all vigour is gone" , "repeated too often" , "Lyre string" , "Overfamiliar through overuse" .)