fury (n.)

late 14c., "fierce passion," from Old French furie, fuire "rage, frenzy" (14c.), from Latin furia "violent passion, rage, madness," from or related to furere "to rage, be mad," which is of uncertain origin. "Many etymologies have been proposed, but none is clearly the best" [de Vaan]. Romans used Furiæ to translate Greek Erinyes, the collective name for the avenging deities sent from Tartarus to punish criminals (in later accounts three in number and female). Hence, in English, figuratively, "an angry woman" (late 14c.).

updated on January 28, 2015

Definitions of fury from WordNet
fury (n.)
a feeling of intense anger;
hell hath no fury like a woman scorned
Synonyms: rage / madness
fury (n.)
state of violent mental agitation;
Synonyms: craze / delirium / frenzy / hysteria
fury (n.)
the property of being wild or turbulent;
Synonyms: ferocity / fierceness / furiousness / vehemence / violence / wildness
Fury (n.)
(classical mythology) the hideous snake-haired monsters (usually three in number) who pursued unpunished criminals;
Synonyms: Eumenides / Erinyes
Etymologies are not definitions. From, not affiliated with etymonline.