Princess's father mad: it's critical (11)

I believe the answer is:

disparaging

'critical' is the definition.
(thesaurus)

'princess's father mad' is the wordplay.
'princess's' becomes 'di's' (Princess Diana).
'father' becomes 'pa' (pa can mean dad or father).
'mad' becomes 'raging' (I've seen this before).
'dis'+'pa'+'raging'='DISPARAGING'

'it's' acts as a link.

(Another definition for disparaging that I've seen is " being abusive".)

I've seen this clue in The Everyman puzzle in The Observer.

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