Ready to drop it after revolution, communist (5)
I believe the answer is:
tired
'ready to drop' is the definition.
(thesaurus)
'it after revolution communist' is the wordplay.
'after revolution' says the letters should be written in reverse.
'communist' becomes 'red' (red is a kind of communist).
'it' written backwards gives 'ti'.
'ti'+'red'='TIRED'
(Other definitions for tired that I've seen before include "Depleted of energy" , "Spent" , "Ready to drop" , "Physically or mental weary" , "Whacked" .)