roaring roaring /ˈrɔrɪŋ/

adjective

1. Very lively and profitable  ( booming , flourishing , palmy , prospering , prosperous , roaring , thriving )
   very lively and profitable
    Flourishing businesses
   flourishing businesses
    A palmy time for stockbrokers
   a palmy time for stockbrokers
    A prosperous new business
   a prosperous new business
    Doing a roaring trade
   doing a roaring trade
    A thriving tourist center
   a thriving tourist center
    Did a thriving business in orchids
   did a thriving business in orchids
   

adverb

1. Extremely  ( roaring )
   extremely
    Roaring drunk
   roaring drunk
   

noun

1. () A deep prolonged loud noise  ( boom , roaring , thunder , roar )
   a deep prolonged loud noise
     The lion's powerful roar echoed through the savannah.
   The lion's powerful roar echoed through the savannah.
   
2. A very loud utterance (like the sound of an animal)  ( bellowing , holla [Archaic] , hollo [Non-standard] , bellow , holler [Informal] , holloa , roar , roaring , yowl , hollering [Informal] )
   a very loud utterance (like the sound of an animal)
    His bellow filled the hallway
   his bellow filled the hallway