A newspaper article, in rising, falls (7)
I believe the answer is:
niagara
'falls' is the definition.
(thesaurus)
'a newspaper article in rising' is the wordplay.
'newspaper' becomes 'rag' (rag is a kind of newspaper**).
'article' becomes 'a' (indefinite article).
'rising' shows that the letters should be reversed in order (going up in a down clue).
'a'+'rag'+'a'+'in'='aragain'
'aragain' in reverse letter order is 'NIAGARA'.
(Other definitions for niagara that I've seen before include "They fall in North America" , "Famous waterfalls" , "1953 Marilyn Monroe film noir thriller" , "North American river with famous falls" , "Great waterfalls on US-Canada border" .)