Rhetorician just more than half cultured (7)
I believe the answer is:
sophist
'rhetorician' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps there's an association between them I don't understand?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for sophist that I've seen before include "One using clever but fallacious arguments" , "philosopher" , "One given to specious reasoning" , "One who uses clever but false argument" , "Clever but fallacious reasoner" .)