Synonyms of pivotal

1 Syllable

keyer, key

2 Syllables

ruling, focal, middle, vital, centric, central, axial, crucial

3 Syllables

principal, critical, centroidal, life-and-death, prepotent, earthshaking, essential, cardinal, momentous, climactic, earth-shaking

4 Syllables

overruling, decisive, earthshattering, overriding, all-important, determining, earth-shattering