Crossword Genius

Lack of feeling in judge’s pronouncement about one (11)

Ross

I believe the answer is:

insentience

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'lack of feeling' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.

'in judge's pronouncement about one' is the wordplay.
'judge's pronouncement' becomes 'sentence' (I've seen this in another clue).
'about' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'sentence' placed around 'i' is 'sentience'.
'in'+'sentience'='INSENTIENCE'

Can you help me to learn more?

(Another definition for insentience that I've seen is " lack of "feel"".)

I've seen this clue in The Times.
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