Being modern, sufficiently competent for an appointment

I think it could be either:

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2,2,4

uptodate

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'being modern' is the definition.
('up to date' can be a synonym of 'modern')

'sufficiently competent for an appointment' is the wordplay.
'sufficiently competent' becomes 'upto' (synonyms. I am not sure about the 'sufficiently' bit.).
'for' says to put letters next to each other.
'an appointment' becomes 'date' ('date' can be a synonym of 'appointment').
'upto'+'date'='UP-TO-DATE'

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I've seen this clue in the Evening Standard.

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