Attitudinize (4)
I believe the answer is:
pose
'attitudinize' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pose that I've seen before include "Pretend to be somebody else" , "Attitude struck" , "Attitudinise" , "'Present, a problem say (4)'" , "position" .)