sove ‧ reign ‧ ty /ˈsɒvrənti, ˈsɒvrɪnti $ ˈsɑːv-/ BrE AmE noun [uncountable]
1 . complete freedom and power to govern:
the sovereignty of Parliament
sovereignty over
Spain’s claim of sovereignty over the territory
2 . the power that an independent country has to govern itself:
the defence of our national sovereignty