adverb

seriously

Translation

seriously, gravely, earnestly

You need to take this seriously.

He was seriously injured in the accident.

Seriously, you ate the whole cake?

((verb)) + seriously You need to take this seriously.

seriously + ((adjective)) He was seriously injured.

Seriously, ...? (sentence adverb) Seriously, you ate the whole cake?

Synonyms: earnestly, gravely, severely; Antonyms: lightly, jokingly

From the adjective 'serious' + the adverb-forming suffix '-ly'.

This is the adverb form of 'serious'. It describes *how* an action is done.