Took steps to depose king in full (5)
I believe the answer is:
paced
'took steps' is the definition.
(to pace is to take a step)
I don't understand how the remainder of the clue works.
(Other definitions for paced that I've seen before include "Made anxious moves" , "Moved steadily" , "Measured (a distance) by walking" , "Walked about in a preoccupied or frustrated way" , "set the tempo" .)