Just me again (4)

I believe the answer is:

mere

'just' is the definition.
('just' can mean 'mere' or 'only')

'me again' is the wordplay.
'again' becomes 're' (prefix meaning 'again').
'me'+'re'='MERE'

(Other definitions for mere that I've seen before include "Without additions or modifications" , "Pure; lake" , "Pond - pure and simple" , "Paltry" , "Former lake" .)

I've seen this clue in the Evening Standard.

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