verb
fulminate
FULL-mih-nayt/ˈfʊlmɪneɪt/
To speak out loudly and angrily against something.
The furious customer fulminates against the repair shop over the damaged laptop.

Etymology
Latin fulminare pictured hurling lightning and, figuratively, thundering. Its use for formal religious condemnation connects that violent image to the English sense of angrily denouncing or criticizing.
More examples
- The host fulminated against corruption throughout the broadcast.
- She is fulminating about the unfair rules again.
- Critics fulminate against the proposal but offer no alternatives.
Forms
fulminate · fulminates · fulminated · fulminating
fulmination noun — A loud and angry denunciation.