boom·ing
 /ˈbuːmıŋ/  adj  
  1 : growing or expanding very quickly
   booming car sales
   We're not benefiting from the country's booming economy.
  2 : loud and low : having a low rumbling sound
   Suddenly the children heard Grandpa's booming voice demanding that they get down from the roof.
  3 : very forceful or powerful
   a tennis player with a booming serve