Point in trite manifesto (4)
I believe the answer is:
item
'point' is the definition.
(synonyms)
'in trite manifesto' is the wordplay.
'in' says the answer is hidden in the clue.
'ITEM' is hidden within 'trite manifesto'.
(Other definitions for item that I've seen before include "pair?" , "Individual article or unit" , "Two lovers as one" , "Boyfriend and girlfriend" , "Piece of news: unit" .)