Show up always with a man (6)
I believe the answer is:
reveal
'show' is the definition.
('reveal' can be a synonym of 'show')
'up always with a man' is the wordplay.
'up' says the letters should be written in reverse (in down clue: letters go upwards).
'always' becomes 'ever' ('ever' can be a synonym of 'always').
'with' is a charade indicator (letters next to each other).
'a man' becomes 'al' (**).
'ever' in reverse letter order is 'reve'.
'reve'+'al'='REVEAL'
(Other definitions for reveal that I've seen before include "Make known or visible" , "Expose, remove covering" , "window, in part" , "Remove cover, unveil" , "Remove cover to display" .)