Not moderately biased? (8)

I believe the answer is:

unfairly

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'biased?' is the definition.
The answer and definition are not the same part of speech.

'not moderately' is the wordplay.
'not' becomes 'un' (I've seen this in other clues).
'moderately' becomes 'fairly' ('fairly' can be a synonym of 'moderately'**).
'un'+'fairly'='UNFAIRLY'

Can you help me to learn more?

(Other definitions for unfairly that I've seen before include "Without justice" , "dishonestly" , "Inequitably, wrongly" , "Unjustly" .)

I've seen this clue in the Evening Standard.

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