Moral support? (5)
I believe this clue is a double definition.
'moral' is the first definition.
(I've seen this before)
'support' is the second definition.
(upright is a kind of support)
(Other definitions for upright that I've seen before include "Pole; principled" , "In an erect position" , "Joanna" , "Vertically honourable?" , "Keyboard instrument" .)
(Other definitions for ethic that I've seen before include "Set of moral values" , "set of morals" , "Moral code" , "Moral rule" , "Ideology" .)