Crossword Genius

Great — put us up before rep stands (5)

Ross

I believe the answer is:

super

'great' is the definition.
(both can mean excellent)

'us up before rep stands' is the wordplay.
'up' shows that the letters should be reversed in order (in down clue: letters go upwards).
'before' is a charade indicator (letters next to each other).
'stands' is a reversal indicator (I've seen 'standing' mean this (in a down clue, letters stand up)).
'us' back-to-front is 'su'.
'rep' backwards is 'per'.
'su'+'per'='SUPER'

'put' is the link.

(Other definitions for super that I've seen before include "senior cop" , "Excellent - small-part actor" , "Prefix meaning over or extremely" , "Marvellous, terrific" , "Gushily great, excellent" .)

I've seen this clue in The Mirror.
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