#1
crucial a. [
important] of extreme importance; vital to the resolution of a crisis; "a crucial moment in his career"; "a crucial election"; "a crucial issue for women"
. wn #2
crucial s. [
all-important, all important, essential, of the essence] of the greatest importance; "the all-important subject of disarmament"; "crucial information"; "in chess cool nerves are of the essence"
. wn