Mention everything due to change (6)
I believe the answer is:
allude
'mention' is the definition.
(I've seen this before)
'everything due to change' is the wordplay.
'everything' becomes 'all' (all things).
'to change' indicates anagramming the letters.
'due' with letters rearranged gives 'ude'.
'all'+'ude'='ALLUDE'
(Other definitions for allude that I've seen before include "Refer to, speak of" , "Refer briefly or indirectly in speaking" , "Refe" , "advert" , "Mention; imply" .)