furiously

Furiously is an English adverb describing action performed with extreme intensity, whether physical speed, force, or emotional energy. It commonly modifies verbs to convey a sense of urgent, unrestrained effort or anger, as in actions carried out with great haste or ferocity. The word can also intensify processes or phenomena described as happening with spirited, relentless energy.

Etymology and form: Furiously derives from the adjective furious, which traces to Latin furiosus (“full of rage”) from furor (“fury”). The adverbial suffix -ly was added in English to form furiously, following a general pattern of turning adjectives into adverbs.

Usage notes: Furiously is versatile in both everyday speech and literary contexts. It frequently appears with verbs of action—typing, running, arguing, working—as well as with more abstract processes, such as debate or activity. While often linked to anger, it can also indicate frenzied or highly energetic effort without necessarily implying emotion, as in “studying furiously.” In formal writing, the word may convey heightened intensity without prescribing a specific emotion.

Examples: She typed furiously to meet the deadline. The crowd shouted furiously. They debated furiously but remained civil. The engine roared furiously as the train accelerated.

Related terms: furious (adjective), furor (noun). Synonyms include frantically, violently, intensely; antonyms include calmly, slowly. Furiously is primarily a manner adverb and is most natural when describing vigorous or extreme action.