A sighed utterance from an actor? (5)
I believe the answer is:
aside
'utterance from an actor?' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'a sighed' is the wordplay.
'sighed' becomes 'side' (I can't explain this - if you can you should give a lot more credence to this answer).
'a'+'side'='ASIDE'
Can you help me to learn more?
(Other definitions for aside that I've seen before include "Privately, apart" , "Actor's remark for the audience alone" , "Out of other people's hearing" , "Words spoken apart in an undertone" , "Away from main action" .)