Piercing describes something that cuts through or penetrates sharply, whether physically or in other powerful ways.

A piercing scream cuts through silence so sharply it makes everyone stop and turn. Piercing cold seems to go right through your jacket and chill you to the bone. When someone gives you a piercing look, their gaze feels so intense it's like they can see exactly what you're thinking. A piercing whistle from a referee commands instant attention because its high, sharp sound carries across an entire field.

The word often describes sounds that are high-pitched and impossible to ignore: a baby's piercing cry, the piercing shriek of train brakes, or a dog whistle with a piercing tone. But it also describes things that penetrate in other ways. A scientist might have piercing insight that cuts through confusion to reveal the truth. A writer's piercing criticism points out flaws so accurately they're hard to deny.

When you pierce something physically, you poke a hole through it, like when someone gets their ears pierced for earrings or when a needle pierces skin for a vaccine. The sharpness and intensity that make something piercing give the word its power: whether it's a sound, a look, or the cold, piercing things command attention because they're impossible to ignore.