English
furiousness
From furious + -ness.
A compound of furious + -ness
Latin furiōsus ‘full of madness or rage, furious, raging’
Old French furieus
Middle English furious ‘furious, raging’
English furious
Today it means
noun The state or quality of being furious or outraged; enragement; inflamedness.
Language periods are conventional ranges, not dates for this word.
Etymograph / furiousness