To issue a thunderous verbal attack or denunciation; to explode with anger or indignation. To protest vehemently or criticize harshly and loudly.
From Latin 'fulminatus,' from 'fulmen' (lightning, thunderbolt). Originally meant to strike with lightning, later metaphorically extended to describe speech that strikes like thunder, loud and forceful.
Think 'fulminate' = 'full-of-might' — someone fulminating is full of thunderous might, like Zeus hurling lightning bolts of criticism. The 'fulm-' root connects to 'fulmination' (explosive criticism).
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