Metaglossary.com - Definitions for "{term}"

Keywords: loud, sonorous, noise, temporary, enough

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

loud enough to cause (temporary) hearing loss

wordnet.princeton.edu

Keywords: ominous, extremely, import, events, world

extremely ominous; "world events of thunderous import"

wordnet.princeton.edu

Keywords: producing

Producing thunder.