Cause to blush (9)
I believe the answer is:
embarrass
'cause to blush' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for embarrass that I've seen before include "Cause to feel self-conscious" , "Cause (someone) to feel awkward" , "Make red" , "Make red-faced" , "Encumber" .)