Blush at study of Communism? (6)
I believe the answer is:
redden
'blush' is the definition.
(I know that blush can be written as redden)
'at study of communism?' is the wordplay.
'at' says to put letters next to each other.
'study' becomes 'den' (term for a study or office).
'of communism?' becomes 'red' (I can't explain this - if you can you should give a lot more credence to this answer).
'den' after 'red' is 'REDDEN'.
Can you help me to learn more?
(Other definitions for redden that I've seen before include "Flush, become embarrassed" , "Reveal embarrassment in colourful way" , "Give visible sign of embarrassment" , "Blush, colour accordingly" , "Blush or become flushed" .)