Admiring greatly, is always within call for (8)

I believe the answer is:

revering

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'admiring greatly is always' is the definition.
I can't judge whether this defines the answer.

'within call for' is the wordplay.
'within' means one lot of letters goes inside another.
'call' becomes 'ring' (telephone call).
'for' becomes 'ever' (I am not sure about this - if you are sure you should believe this answer much more).
'ring' placed around 'ever' is 'REVERING'.

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I've seen this clue in the Evening Standard.

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