Roaring means making a loud, deep, powerful sound. When a lion roars, the thunderous noise can be heard up to five miles away, announcing its presence across the savanna. Engines roar when they rev at full power. Waterfalls roar as millions of gallons cascade over cliffs. Wind roars through canyons during a storm.

The word captures something wild, forceful, and impossible to ignore. A whisper is quiet, a shout is loud, but a roar is overwhelming.

People can roar too. A crowd roars with excitement when their team scores. Someone might roar with laughter at a hilarious joke, or roar in anger when deeply frustrated. The word emphasizes the intensity and volume of the sound.

Roaring can also describe great success or intense activity. The Roaring Twenties was a nickname for the 1920s in America, a decade of economic prosperity, cultural energy, and social change. When business is roaring, it's thriving. A roaring fire burns hot and bright, crackling loudly and giving off tremendous heat. The phrase roaring success means something worked spectacularly well, beyond all expectations.