fulminate
Fulminate (verb) means to speak out angrily against something.
Etymology
Inherited from Middle English fulminaten, borrowed from Latin fulminātus, perfect passive participle of fulminō (“to lighten, hurl or strike with lightning”) (see -ate (verb-forming suffix)), from fulmen (“lightning which strikes and sets on fire, thunderbolt”), from earlier *fulgmen, *fulgimen, from fulgeō, fulgō (“flash, lighten”). Doublet of fulmine. More at fulgent.