On one’s feet, standing for revolution (8)
I believe the answer is:
uprising
'for revolution' is the definition.
(I've seen this before)
'on one's feet standing' is the wordplay.
'on' means one lot of letters go next to another.
'one's feet' becomes 'rising' (I am not sure about this - if you are sure you should believe this answer much more).
'standing' becomes 'up'.
'rising' put after 'up' is 'UPRISING'.
Can you help me to learn more?
(Other definitions for uprising that I've seen before include "A revolting action?" , "Organised opposition to authority" , "revolution" , "Rebellion, revolt" , "Insurrection or revolt" .)