Show emotions concealed by Alfonso Borgia (3)
I believe the answer is:
sob
'show emotions' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
'concealed by alfonso borgia' is the wordplay.
'concealed' indicates the answer is hidden within the clue.
'SOB' is hidden within 'by alfonso borgia'.
Can you help me to learn more?
(Other definitions for sob that I've seen before include "making one gasp" , "Weep audibly" , "Wep convulsively" , "Weep loudly" , "Weep heavily, wail" .)