Clear victor — one foolishly carping too much (12)

I believe the answer is:

overcritical

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'carping too much' is the definition.
'overcritical' can be an answer for 'carping' (thesaurus). I'm not certain of the 'too much' bit.

'clear victor one foolishly' is the wordplay.
'one' becomes 'i' (roman numeral).
'foolishly' is an anagram indicator.
'clear'+'victor'+'i'='clearvictori'
'clearvictori' is an anagram of 'OVERCRITICAL'.

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I've seen this clue in The Guardian.

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