adv.
1. to a severe or serious degree
2. (`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well
3. evilly or wickedly
4. in a disobedient or naughty way
5. with great intensity (`bad' is a nonstandard variant for `badly')
6. very much; strongly
7. without skill or in a displeasing manner
8. in a disadvantageous way; to someone's disadvantage
9. unfavorably or with disapproval
10. with unusual distress or resentment or regret or emotional display