After match, millions appear (4)
I believe the answer is:
seem
'appear' is the definition.
(I know that appear can be written as seem)
'after match millions' is the wordplay.
'after' is a charade indicator (letters next to each other).
'match' becomes 'see' (I've seen this in another clue).
'millions' becomes 'm' (abbreviation).
'see'+'m' is 'SEEM'.
(Other definitions for seem that I've seen before include "Come across as" , "Appear to the eye" , "Appear, look" , "Appear, give impression of being" .)