paramount
adjective formal uk/ˈpær.ə.maʊnt/ us/ˈper.ə.maʊnt/
C2 至上的，首要的
more important than anything else
There are many priorities, but reducing the budget deficit is paramount/is of paramount importance. 很多事情要优先解决，但当务之急是减少预算赤字。
Synonyms: overriding preponderant