Honest and winning still (10)
I believe the answer is:
upstanding
'honest' is the definition.
(thesaurus)
'winning still' is the wordplay.
'winning' becomes 'up' (I've seen this in other clues).
'still' becomes 'standing' ('standing' can be a synonym of 'still'**).
'up'+'standing'='UPSTANDING'
'and' acts as a link.
(Other definitions for upstanding that I've seen before include "Ready for toast" , "Honest, respectable; erect" , "as we must be when the judge appears!" .)