Synonyms of upheavals

1 Syllable
switch
2 Syllables
tumult, flip-flop, stirring, ferment, shakeout, outbreak, tremor, clamor, upturn, turmoil, outcry, outburst, temblor
3 Syllables
turnaround, commotion, overthrow, eruption, cataclysm, convulsion, disaster, disruption, about-face, disorder, explosion
4 Syllables
alteration, catastrophe, revolution, disturbance