All 5 Uses

sovereign
in
The Winter's Tale
(Auto-generated)

Sir, my lord, I could do this; and that with no rash potion, But with a ling'ring dram, that should not work Maliciously like poison: but I cannot Believe this crack to be in my dread mistress, So sovereignly being honourable.†
Scene 1.2
conspiring with Camillo to take away the life of our sovereign lord the king,
Scene 3.2 *

sovereign = supreme
I would not be a stander-by to hear My sovereign mistress clouded so, without My present vengeance taken: 'shrew my heart, You never spoke what did become you less Than this; which to reiterate were sin As deep as that, though true.†
Scene 1.2
If you would not so, You pity not the state, nor the remembrance Of his most sovereign name; consider little What dangers, by his highness' fail of issue, May drop upon his kingdom, and devour Incertain lookers-on.†
Scene 5.1
What, sovereign sir, I did not well, I meant well.†
Scene 5.3

Definitions:

(1) (sovereign)
a supreme ruler; or describing a political body as self-governing
(2) (meaning too rare to warrant focus)
a British coin used until 1914; an adjective describing something as powerfully effective