Crossword Genius

He eats a lot - too much, putting weight on (7)

Ross

I believe the answer is:

glutton

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'he eats a lot too much' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'putting weight on' is the wordplay.
'putting' becomes 'glut' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'weight' becomes 'ton' (unit of weight).
'on' is a charade indicator (letters next to each other).
'glut'+'ton'='GLUTTON'

Can you help me to learn more?

(Other definitions for glutton that I've seen before include "Immoderate eater" , "One eats too much" , "Over-eater" , "Pig" , "Forest animal" .)

I've seen this clue in the Evening Standard.
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