Not in a slump? (5)
I believe the answer is:
erect
'not in a slump?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for erect that I've seen before include "Upright; put up" , "Found" , "Build - straight up" , "Construct, build" , "Construct - perpendicular" .)