Noah Webster's New International Dictionary of the English Language
1. (a.) Contrary to good, in a physical sense; contrary or opposed to advantage, happiness, etc.; bad; evil; unfortunate; disagreeable; unfavorable.
2. (a.) Contrary to good, in a moral sense; evil; wicked; wrong; iniquitous; naughty; bad; improper.
3. (a.) Sick; indisposed; unwell; diseased; disordered; as, ill of a fever.
4. (a.) Not according with rule, fitness, or propriety; incorrect; rude; unpolished; inelegant.
5. (n.) Whatever annoys or impairs happiness, or prevents success; evil of any kind; misfortune; calamity; disease; pain; as, the ills of humanity.
6. (n.) Whatever is contrary to good, in a moral sense; wickedness; depravity; iniquity; wrong; evil.
7. (adv.) In a ill manner; badly; weakly.