Old urgent saying (10)
I believe the answer is:
expressing
'saying' is the definition.
The definition and answer can be both to do with communicating as well as being present participle verbs.
Maybe you can see a link between them that I don't see?
'old urgent' is the wordplay.
'old' becomes 'ex' (prefix meaning former or onetime).
'urgent' becomes 'pressing' (synonyms).
'ex'+'pressing'='EXPRESSING'
Can you help me to learn more?
(Other definitions for expressing that I've seen before include "Communicating" , "verbalising" .)