Upright, having finish and manners (7)
I believe the answer is:
endways
'upright' is the definition.
(thesaurus)
'finish and manners' is the wordplay.
'finish' becomes 'end' (come to an end).
'and' says to put letters next to each other.
'manners' becomes 'ways' (I've seen this in another clue).
'end'+'ways'='ENDWAYS'
'having' acts as a link.
(Other definitions for endways that I've seen before include "Not side on" , "Not sideways/lengthways" , "as a departing bus is seen" , "Lengthwise" , "Turned up" .)