What's the subject of groan from hatemonger? (5)
I believe the answer is:
theme
This clue might be a double definition.
'what's the subject' is the first definition.
('theme' can be a synonym of 'subject')
'groan from hatemonger?' is the second definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'of' acts as a link.
Can you help me to learn more?
(Other definitions for theme that I've seen before include "Pervading idea in art" , "Topic; melody" , "Topic, leitmotif" , "[(type of) PARK]" , "Musical idea; topic" .)