Excitement level beyond measure! (5)
I believe the answer is:
drama
'excitement' is the definition.
(I've seen this before)
'level beyond measure' is the wordplay.
'level beyond' becomes 'dra' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'measure' becomes 'mA' (mA is a kind of measure).
'dra'+'ma'='DRAMA'
Can you help me to learn more?
(Other definitions for drama that I've seen before include "Play - big emotional scene" , "Play (as a genre)" , "theatre show" , "spectacle of emotion" , "Literary genre for the theatre" .)