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1. Sounding like thunder
   "the thundering herd"
    
2. Extraordinarily big or impressive
   "a thundering success"; "the thundering silence of what was left unsaid"

1. Move fast, noisily, and heavily
   "The bus thundered down the road"
    
2. Utter words loudly and forcefully
   - roar
    
3. Be the case that thunder is being heard
   "Whenever it thunders, my dog crawls under the bed"
   - boom
    
4. To make or produce a loud noise
   "The river thundered below"

See also: impressive, noisy, thunderer

Type of: howl, move, roar, shout

Encyclopedia: Thunder Thunder, Lightning, Strike