WordWeb Online

1. Very lively and profitable
   "booming businesses"
   - flourishing, palmy, prospering, prosperous, roaring, thriving
    
2. Used of the voice
   - stentorian

1. Make a resonant sound, like artillery
   "His deep voice boomed through the hall"
   - din
    
2. Hit hard
   "He boomed a 3-run homer"
   - smash, nail, blast
    
3. Be the case that thunder is being heard
   "Whenever it booms, my dog crawls under the bed"
   - thunder
    
4. Make a deep hollow sound
   "Her voice booms out the words of the song"
   - boom out
    
5. Grow vigorously
   "business is booming"
   - thrive, flourish, expand

See also: full, successful

Type of: go, grow, hit, sound

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