Commandeers (6)
I believe the answer is:
usurps
'commandeers' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for usurps that I've seen before include "Takes a position of power illegally" , "Encroaches upon" , "Takes power wrongfully, wrests" , "Seize and hold by force" , "takes place" .)