Appear and put to shame (4,2)
I believe the answer is:
show up
This clue is a double definition.
'appear' is the first definition.
(I know that show up is a more specific form of the action appear)
'put to shame' is the second definition.
(thesaurus)
'and' acts as a link.
(Other definitions for show up that I've seen before include "Put in appearance or expose" , "cause public embarrassment" , "Become visible" , "Expose, or arrive as expected" , "Expose or keep appointment" .)