Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Producing thunder or a similar sound.
  • adj. Loud and unrestrained in a way that suggests thunder: thunderous applause.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Very loud; suggestive of thunder

from the GNU version of the Collaborative International Dictionary of English

  • adj. Producing thunder.
  • adj. Making a noise like thunder; sounding loud and deep; sonorous.

from The Century Dictionary and Cyclopedia

  • Thunder-producing; betokening thunder; awful.
  • Thundering; loud and deep-sounding; making a noise like thunder.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. loud enough to cause (temporary) hearing loss
  • adj. extremely ominous

Etymologies

thunder +‎ -ous (Wiktionary)

Examples

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