Puts on a show with unsuitable cast (4)
I believe the answer is:
acts
'puts on a show' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'unsuitable cast' is the wordplay.
'unsuitable' indicates anagramming the letters (letters not in suitable order).
'cast' anagrammed gives 'ACTS'.
'with' is the link.
Can you help me to learn more?
(Other definitions for acts that I've seen before include "Goes" , "spiritual work" , "NT book; laws" , "Follower of John" , "Cast in exploits" .)