thundering adjective 3noun 2adverb 1forms 3 adjective3 •Of, pertaining to, or accompanied by thunder. •Producing a noise or effect like thunder; thunderous. •(informal) Very great; extraordinary.“I think it had a thundering lot to do with the story I am considering now,” said Father Brown. — 1927 noun2 •A loud percussive sound, like thunder.I listened while God seemed to speak through the thunderings of the great cataract before me. — 1833 •(no longer used) A thunderstorm. adverb1 •(informal) Very great; extraordinarily."As long as there are any of us left sound and healthy we've got a chance - a thundering good chance." — 1951 formsthunderings · more thundering · most thundering