Sudden activity to get pass at end of term (5)
I believe the answer is:
spasm
'sudden activity' is the definition.
(I've seen this in another clue)
'pass at end of term' is the wordplay.
'pass at' becomes 'spas' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'end of' says to take the final letters.
The final letter of 'term' is 'm'.
'spas'+'m'='SPASM'
'to get' acts as a link.
Can you help me to learn more?
(Other definitions for spasm that I've seen before include "cramp" , "Convulsive action" , "Jerk" , "Muscular convulsion" , "Involuntary muscular movement" .)