Crossword Genius

Professor of infinite wisdom? (4-3)

Ross

I believe the answer is:

know-all

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'professor of infinite wisdom?' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see an association between them that I can't see?

This is the entire clue.

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(Other definitions for know-all that I've seen before include "Someone who refuses to accept advice or information from others" , "Clever dick!" , "Pedantic" , "Clever clogs!" , "One affecting omniscience" .)

I've seen this clue in The Sun.
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