Stay silent about speaker and writer (10)
I believe the answer is:
moratorium
'stay' is the definition.
(thesaurus)
'silent about speaker and writer' is the wordplay.
'silent' becomes 'mum' (keep mum).
'about' is an insertion indicator.
'speaker' becomes 'orator' (orator is a kind of speaker).
'and' says to put letters next to each other.
'writer' becomes 'I' (the person who is writing these clues).
'orator'+'i'='oratori'
'mum' going around 'oratori' is 'MORATORIUM'.
(Other definitions for moratorium that I've seen before include "Prohibition" , "Agreed pause in activity" , "agreed postponement" , "Temporary halt in activity" , "Legal delay" .)