In acerbic manner, money invested in presidential coinage? (8)

I believe the answer is:

bitingly

'in acerbic manner' is the definition.

'money invested in presidential coinage?' is the wordplay.
'money' becomes 'tin' (I've seen this before).
'invested in' indicates putting letters inside.
'presidential coinage?' becomes 'bigly' (term coined by Donald Trump).
'tin' put into 'bigly' is 'BITINGLY'.

I've seen this clue in The Guardian.

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