paramount
/ˈper-ə-ˌmau̇nt/
adjective
superior to all others : supreme
a matter of paramount importance
dominant predominant paramount preponderant mean superior to all others in influence or importance. dominant applies to something that is uppermost because ruling or controlling. predominant applies to something that exerts, often temporarily, the most marked influence.
noun
a supreme ruler
geographical name
city in southwestern California north of Long Beach population 54,098