paramountcy
noun /ˈpærəmaʊntsi/
  /ˈpærəmaʊntsi/
[uncountable] (formal)- the quality of being more important than anything else- Paramountcy is to be given to the interests of the child.
 
- the state of having the highest position or the greatest power- The important issue in this matter is the paramountcy of our Parliament.