Startilization
Not just just a revelation, or realization, it's an epiphany that's so momentous as to startle you as you think it or others as they hear it.
Sitting in his chair, it came to him in a startilization, knocking him off his feet.
When she heard the news the startilization rolled over her whole body throwing her into a fit of agony.
When she heard the news the startilization rolled over her whole body throwing her into a fit of agony.