sink swim time (noun) critical mass: crucial point
Sinonime: climax,
crisis, crisis point, critical juncture, critical point, critical stage, crossroads, crossroads, crucial moment, crunch time, decisive moment, defining moment, do or die time,
emergency, high noon, high noon, irreversible momentum, moment of truth, pivotal point, point of no return, sink or swim time, the Rubicon,
turning point, zero hour