Put up with appearance (11)
I believe the answer is:
countenance
This clue is a double definition.
'put up with' is the first definition.
(thesaurus)
'appearance' is the second definition.
(countenance is a kind of appearance)
(Other definitions for countenance that I've seen before include "appearance" , "features" , "A person's face; admit as possible" , "Tolerate - face" , "Approve of - human face" .)