Hold royal office (5)
I believe the answer is:
reign
(Other definitions for reign that I've seen before include "Predominance" , "Sit on a throne" , "Niger (anag)" , "Control" , "Dominion" .)
I believe the answer is:
reign
(Other definitions for reign that I've seen before include "Predominance" , "Sit on a throne" , "Niger (anag)" , "Control" , "Dominion" .)