Even at the end of life, the body may perform a "silent scream"—a grimace or facial tension that is a natural part of the dying process, though it can be distressing for loved ones to witness. Why We Stay Silent Silent Screams - Shaun Goodsell

We’ve all been there. You’re standing in a crowded room, or perhaps sitting at your desk, and suddenly a wave of emotion hits you so hard it feels like you’ve been physically struck. You want to shout, to wail, to let the world know how much you are hurting—but you don't. You take a breath, adjust your mask, and carry on.

The silent scream isn't just one emotion; it’s a symptom of many different internal struggles:

This is the . It is the sound of a heart breaking in a vacuum. The Many Faces of the Silent Scream

This is a horror at a "universe evacuated of meaning and value". It’s the dread we feel when we confront the vastness of the unknown.