Tempestuous
Part of speech: adjective
Definition: Of, or resembling a tempest; stormy, tumultuous.
Furious
Part of speech: adjective
Definition: Transported with passion or fury; raging; violent; as, a furious animal.Rushing with impetuosity; moving with violence; as, a furious stream; a furious wind or storm.
Example sentence: I believe any success in life is made by going into an area with a blind, furious optimism.