seriously, earnestly, in earnest (adverb)

in a serious manner

"talking earnestly with his son"; "she started studying snakes in earnest"; "a play dealing seriously with the question of divorce"

badly, severely, gravely, seriously (adverb)

to a severe or serious degree

"fingers so badly frozen they had to be amputated"; "badly injured"; "a severely impaired heart"; "is gravely ill"; "was seriously ill"

seriously (Adverb)

In a serious or literal manner.