Where does “furiously” come from?

Furiously comes from Middle English furious plus the adverb-forming suffix -ly, from Latin furiosus meaning "full of rage," derived from fur meaning "thief" or "madman" with the suffix -osus.

furiously (English): In a furious manner; angrily; Quickly;...

Definitions

  1. In a furious manner; angrily; Quickly;...

Ancestry of “furiously”, step by step

StepLanguageWordMeaning
1EnglishfuriousFeeling great anger; raging; violent; Rushing...
2Old Frenchfurieus
3Latinfuriōsusfull of madness or rage, furious, raging
4Latinfuriarage, fury, frenzy
5Latinfurōto rave, rage, or seethe; to be crazed, mad, or frantic
6Latinfūra thief
7Proto-Italicfōrthief
8Proto-Indo-Europeanbʰṓrthief
9Proto-Indo-Europeanbʰer-to bear, carry
Every word from Proto-Indo-European bʰer-Every word from Proto-Indo-European bʰṓrEvery word from Proto-Italic fōr
furiously — Etymology, Origin & Word History | Etymology Explorer