Excessively, furthermore (3)

I believe the answer is:

too

I believe this clue is a double definition.

'excessively' is the first definition.
('too' can be a synonym of 'excessively')

'furthermore' is the second definition.
(I've seen this before)

(Other definitions for too that I've seen before include "On top - also" , "Additionally" , "Unduly" , "Moreover, in addition" , "To a greater than desirable extent" .)

I've seen this clue in the Evening Standard.

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