sovereign sovereign /ˈsɑːvrən/

adjective

1. () (of political bodies) not controlled by outside forces  ( autonomous , self-governing , independent , sovereign )
   (of political bodies) not controlled by outside forces
    An autonomous judiciary
   an autonomous judiciary
    A sovereign state
   a sovereign state
   
2. () Greatest in status, authority or power  ( sovereign , supreme )
   greatest in status, authority or power
    A supreme tribunal
   a supreme tribunal
   

noun

1. () A nation's ruler or head of state usually by hereditary right  ( crowned head , monarch , sovereign )
   a nation's ruler or head of state usually by hereditary right
     The wise sovereign ruled over the kingdom with wisdom and compassion.
   The wise sovereign ruled over the kingdom with wisdom and compassion.