Roaring Common

a deep prolonged loud noise

"The roaring engine shook the entire car as it sped down the empty highway."

a very loud utterance (like the sound of an animal)

"his bellow filled the hallway"

A loud, deep, prolonged sound, as of a large beast; a roar.

"The lion's roaring echoed through the savanna, shaking dust from the dry trees."

present participle of roar

"The crowd's cheering grew into a roaring sound that shook the stadium walls."

very lively and profitable

"flourishing businesses"

"a palmy time for stockbrokers"

"a prosperous new business"

"doing a roaring trade"

"a thriving tourist center"

"did a thriving business in orchids"

Intensive; extreme.

"The roaring success of their new product surprised everyone who thought it would flop."

extremely

"roaring drunk"