This is the 4972nd most frequent French word.
souveraine
Souveraine: Sovereign; supreme authority or ruler (feminine form).
Here, 'souveraine' is used as an adjective to describe the queen's supreme authority and autonomy over her realm.
La reine est souveraine dans son royaume.
The queen is sovereign in her kingdom.
In this context, 'souveraine' is an adjective describing a decision that is independent and authoritative, emphasizing the council's free will.
Une décision souveraine a été prise par le conseil.
A sovereign decision was made by the council.
Here, 'souveraine' is used metaphorically to describe someone's commanding and confident behavior, indicating mastery or control.