Reportedly change table (5)
I believe the answer is:
altar
'table' is the definition.
(I know that altar is a type of table)
'reportedly change' is the wordplay.
'reportedly' shows a homophone (sound like).
'change' becomes 'alter' (synonyms).
'alter' is a homophone of 'ALTAR'.
(Other definitions for altar that I've seen before include "Table for religious sacrifices or ceremonies" , "location for union negotiation" , "Holy table" , "section of church" , "A ceremonial table for worshipping" .)