Concerned with Point, Evita backing Fearsome? (11)

I believe the answer is:

rebarbative

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'fearsome?' is the definition.
Both the definition and answer are adjectives. Perhaps they are linked in a way I don't understand?

'concerned with point evita backing' is the wordplay.
'concerned with' becomes 're' (re can mean regarding, concerning).
'point' becomes 'barb' (barb is a kind of point).
'backing' shows that the letters should be reversed in order.
'evita' in reverse letter order is 'ative'.
're'+'barb'+'ative'='REBARBATIVE'

Can you help me to learn more?

(Another definition for rebarbative that I've seen is " Ever a rabbit (anag) - repellent or forbidding".)

I've seen this clue in the Sydney Morning Herald.

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