Appear to embarrass (4,2)
I believe the answer is:
show up
I believe this clue is a double definition.
'appear' is the first definition.
(showing up is a kind of appearing)
'embarrass' is the second definition.
(thesaurus)
'to' is the link.
(Other definitions for show up that I've seen before include "Arrive - put to shame" , "Expose, or arrive as expected" , "Make an appearance" , "Put in appearance or expose" , "Expose or keep appointment" .)