The group simply faded away without taking any significant action.
Often, particularly in someone with an intact family and friends, the behavior will simply fade away.
But foreign diplomats here say they believe the case will simply fade away.
It broke his spirit, and he simply faded away over the course of the next month.
Whether he simply faded out of existence or went mad, there would be no future together.
But he'd been too absorbed in what he was doing and the impulse simply faded again.
The civilization of his ancestors had not simply faded away.
The opposite side of the sphere wasn't there; it simply faded away.
Simply faded from view and was never seen again.
Most short-term memories simply fade away in a few seconds, or minutes.