Tight-knit group not half supported by revolutionary stuff of a trite nature (6)
I believe the answer is:
cliche
'stuff of a trite nature' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'tight-knit group not half supported by revolutionary' is the wordplay.
'tight-knit group' becomes 'clan' (I've seen this in another clue).
'not half' suggests halving the letters.
'supported by' becomes 'i' (I can't justify this - if you can you should believe this answer much more).
'revolutionary' becomes 'che' (Che Guevara the Marxist revolutionary).
'clan' cut in half is 'cl'.
'cl'+'i'+'che'='CLICHE'
Can you help me to learn more?
(Other definitions for cliche that I've seen before include "Saying made tedious through repetition" , "Stereotyped expression" , "Jaded or well-worn expression" , "Saying become tedious with over-use" , "One by one" .)