Badly
Part of speech: adjective
Definition: ill, unwell
Part of speech: adverb
Definition: In a bad manner. Very much; to a great degree.
Example sentence: My motto was always to keep swinging. Whether I was in a slump or feeling badly or having trouble off the field, the only thing to do was keep swinging.
Seriously
Part of speech: adverb
Definition: In a serious or literal manner.(manner) In a serious or literal manner.
Example sentence: It's your outlook on life that counts. If you take yourself lightly and don't take yourself too seriously, pretty soon you can find the humor in our everyday lives. And sometimes it can be a lifesaver.