Tents being affected (4)
I believe the answer is:
camp
This clue is a double definition.
'tents' is the first definition.
'being affected' is the second definition.
(camp can mean exaggerated or affected)
(Other definitions for camp that I've seen before include "Temporary accommodation; exaggeratedly theatrical" , "Temporary living quarters, for soldiers perhaps" , "Affected in mannerisms" , "group of supporters" , "Temporary military site" .)