Crushingly describes something happening in a way that overwhelms or devastates. When someone receives a crushingly disappointing grade after studying hard, the disappointment feels heavy and overwhelming, like being pressed down by an enormous weight.

When something happens crushingly, it affects you with a devastating force. A team might suffer a crushingly embarrassing defeat when they lose 52 to 3. A student might find a test crushingly difficult when every question seems impossible.

Notice how crushingly intensifies whatever follows it. Regular disappointment is one thing, but crushingly disappointing news can feel almost unbearable. The word suggests that something is so bad it seems to flatten your spirits or confidence. When someone describes being crushingly sad or crushingly lonely, they're communicating that the feeling weighs on them like a physical burden.