New area to decline after rising charges (7)
I believe the answer is:
aerates
'rising charges' is the definition.
The definition and answer can be both related to change as well as being verbs in their -s form.
Maybe there's an association between them I don't understand?
'new area to decline after' is the wordplay.
'new' indicates an anagram.
'to decline' becomes 'tes' (I am not sure about this - if you are sure you should believe this answer much more).
'after' means one lot of letters go next to another.
'area' anagrammed gives 'aera'.
'aera'+'tes'='AERATES'
Can you help me to learn more?
(Other definitions for aerates that I've seen before include "uses fork to do it?" , "fans" , "Pumps carbon dioxide into" , "Puts fizz into a drink" , "Adds carbon dioxide to liquid under pressure" .)