Crossword Genius

A dandy to boot (2,4)

Ross

I believe the answer is:

as well

'to boot' is the definition.
(I've seen this before)

'a dandy' is the wordplay.
'dandy' becomes 'swell' (both can informally mean excellent or satisfactory).
'a'+'swell'='AS WELL'

(Other definitions for as well that I've seen before include "Appropriate" , "A swell sort of addition" , "Also, in addition" , "on top" , "To boot" .)

I've seen this clue in The Independent and The Telegraph.
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