Suggested by a low fellow (6)
I believe the answer is:
mooted
'suggested' is the definition.
The definition and answer can be both to do with communicating as well as being past participle verbs.
Maybe you can see an association between them that I don't see?
'by a low fellow' is the wordplay.
'by' says to put letters next to each other.
'a low' becomes 'moo' (both can mean to make the noise of a cow).
'fellow' becomes 'ted' (man's name).
'moo' next to 'ted' is 'MOOTED'.
Can you help me to learn more?
(Other definitions for mooted that I've seen before include "'Debated, considered (6)'" , "Raised matter for discussion" , "Proposed for discussion" , "Raised question for discussion" .)