Crossword Genius

Though foolish, he sounds more advanced (5)

Ross

I believe the answer is:

moron

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'though foolish he sounds more advanced' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'though foolish he' is the wordplay.
'though foolish' becomes 'mo' (I can't justify this - if you can you should give a lot more credence to this answer).
'he' becomes 'ron' (short for Ronald).
'mo'+'ron'='MORON'

Can you help me to learn more?

(Other definitions for moron that I've seen before include "Cretin" , "Fool" , "Blockhead" , "Complete imbecile" , "Halfwit" .)

I've seen this clue in the Evening Standard.
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