tonitruous
adjective
to·nit·ru·ous
təˈni‧trəwəs
variants or less commonly tonitruant
-wənt
: thundering, fulminating
Word History
Etymology
tonitruous from Latin tonitruum thunder (from tonitrus thunder, from tonare to thunder) + English -ous; tonitruant from Late Latin tonitruant- tonitruans, from present participle of tonitruare to thunder, from Latin tonitruum thunder