Setter admits being sexually diverse - in poetic terms (5)
I believe the answer is:
iambi
'sexually diverse in poetic terms' is the definition.
The definition and answer can be both related to communication as well as being plural nouns.
Maybe they are linked in a way I don't understand?
'setter admits' is the wordplay.
'setter' becomes 'I' (the person who set this crossword).
'admits' becomes 'ambi' (I can't explain this - if you can you should give a lot more credence to this answer).
'i'+'ambi'='IAMBI'
'being' is the link.
Can you help me to learn more?
(Other definitions for iambi that I've seen before include "Poetic feet" , "Concierto de Aranjuez composer" , "Metrical patterns" , "Short-long metrical feet" , "Poetic pieces" .)