Be melodramatic on stage (5)
I believe the answer is:
emote
'be melodramatic on stage' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for emote that I've seen before include "Express exaggerated feeling" , "Display strong feeling in a theatrical manner" , "'effuse'" , "Show feelings excessively" , "Show feeling excessively" .)