Put on quite an act (5)
I believe the answer is:
emote
'put on quite an act' 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 "Behave theatrically" , "Show great feelings" , "Exaggerate one's feelings" , "Go over the top" , "'effuse'" .)