Roget's Thesaurus: Entry 146 (Sudden or violent change)

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#146. [Sudden or violent change.] Revolution. -- N. revolution, bouleversement, subversion, break up; destruction &c. 162; sudden change, radical change, sweeping organic change; change of state, phase change; quantum leap, quantum jump; clean sweep, coup d'etat[Fr], counter revolution.

jump, leap, plunge, jerk, start, transilience|; explosion; spasm, convulsion, throe, revulsion; storm, earthquake, cataclysm.

legerdemain &c. (trick) 545.

V. revolutionize; new model, remodel, recast; strike out something new, break with the past; change the face of, unsex.

Adj. unrecognizable; revolutionary.