thunderous

Meanings

1. 1
   adj

   extremely ominous

   world events of thunderous import

2. 2
   adj

   Very loud; that sounds like thunder; thundersome. Also in metaphorical expressions, signifying fury.

   But when the moon rose and the breeze awakened, and the sedges stirred, and the cat's-paws raced across the moonlit ponds, and the far surf off Wonder Head intoned the hymn of the four winds, the trinity, earth and sky and water, became one thunderous symphony—a harmony of sound and colour silvered to a monochrome by the moon.

3. 3
   adj

   loud enough to cause (temporary) hearing loss

Etymology

From thunder + -ous.