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' means one lot of letters go next to another.
'manners' becomes 'ways' (I've seen this before).
'end'+'ways'='ENDWAYS'
'having' is the 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" .)