Provide some backing with one's name (7)
I believe the answer is:
endorse
'one's name' is the definition.
The answer and definition can be both to do with communicating as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?
'provide some backing' is the wordplay.
I cannot quite see how this works, but
'provide' could be 'do' (do can mean to provide or serve up) and 'do' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
'with' acts as a link.
Can you help me to learn more?
(Other definitions for endorse that I've seen before include "Give support or approval to" , "Give backing to" , "Put one's name to, approve" , "Docket" , "'Approve of, back (7)'" .)